diff --git a/ddl/ddl_api.go b/ddl/ddl_api.go index a35f606a1c0eb..d49b228c46677 100644 --- a/ddl/ddl_api.go +++ b/ddl/ddl_api.go @@ -1202,6 +1202,14 @@ func (d *ddl) CreateTable(ctx sessionctx.Context, s *ast.CreateTableStmt) (err e err = d.doDDLJob(ctx, job) if err == nil { + // do pre-split and scatter. + if tbInfo.ShardRowIDBits > 0 && tbInfo.PreSplitRegions > 0 { + if ctx.GetSessionVars().WaitTableSplitFinish { + preSplitTableRegion(d.store, tbInfo, true) + } else { + go preSplitTableRegion(d.store, tbInfo, false) + } + } if tbInfo.AutoIncID > 1 { // Default tableAutoIncID base is 0. // If the first ID is expected to greater than 1, we need to do rebase. @@ -1574,8 +1582,13 @@ func handleTableOptions(options []*ast.TableOption, tbInfo *model.TableInfo) err tbInfo.ShardRowIDBits = shardRowIDBitsMax } tbInfo.MaxShardRowIDBits = tbInfo.ShardRowIDBits + case ast.TableOptionPreSplitRegion: + tbInfo.PreSplitRegions = op.UintValue } } + if tbInfo.PreSplitRegions > tbInfo.ShardRowIDBits { + tbInfo.PreSplitRegions = tbInfo.ShardRowIDBits + } return nil } diff --git a/ddl/table.go b/ddl/table.go index e0f5764d65d9d..225a11208a62b 100644 --- a/ddl/table.go +++ b/ddl/table.go @@ -336,6 +336,8 @@ func checkSafePoint(w *worker, snapshotTS uint64) error { type splitableStore interface { SplitRegion(splitKey kv.Key) error + SplitRegionAndScatter(splitKey kv.Key) (uint64, error) + WaitScatterRegionFinish(regionID uint64) error } func splitTableRegion(store kv.Storage, tableID int64) { @@ -350,6 +352,74 @@ func splitTableRegion(store kv.Storage, tableID int64) { } } +func preSplitTableRegion(store kv.Storage, tblInfo *model.TableInfo, waitTableSplitFinish bool) { + s, ok := store.(splitableStore) + if !ok { + return + } + regionIDs := make([]uint64, 0, 1<<(tblInfo.PreSplitRegions-1)+len(tblInfo.Indices)) + + // Example: + // ShardRowIDBits = 5 + // PreSplitRegions = 3 + // + // then will pre-split 2^(3-1) = 4 regions. + // + // in this code: + // max = 1 << (tblInfo.ShardRowIDBits - 1) = 1 << (5-1) = 16 + // step := int64(1 << (tblInfo.ShardRowIDBits - tblInfo.PreSplitRegions)) = 1 << (5-3) = 4; + // + // then split regionID is below: + // 4 << 59 = 2305843009213693952 + // 8 << 59 = 4611686018427387904 + // 12 << 59 = 6917529027641081856 + // + // The 4 pre-split regions range is below: + // 0 ~ 2305843009213693952 + // 2305843009213693952 ~ 4611686018427387904 + // 4611686018427387904 ~ 6917529027641081856 + // 6917529027641081856 ~ 9223372036854775807 ( (1 << 63) - 1 ) + // + // And the max _tidb_rowid is 9223372036854775807, it won't be negative number. + + // Split table region. + step := int64(1 << (tblInfo.ShardRowIDBits - tblInfo.PreSplitRegions)) + // The highest bit is the symbol bit,and alloc _tidb_rowid will always be positive number. + // So we only need to split the region for the positive number. + max := int64(1 << (tblInfo.ShardRowIDBits - 1)) + for p := int64(step); p < max; p += step { + recordID := p << (64 - tblInfo.ShardRowIDBits) + recordPrefix := tablecodec.GenTableRecordPrefix(tblInfo.ID) + key := tablecodec.EncodeRecordKey(recordPrefix, recordID) + regionID, err := s.SplitRegionAndScatter(key) + if err != nil { + logutil.Logger(ddlLogCtx).Warn("[ddl] pre split table region failed", zap.Int64("recordID", recordID), zap.Error(err)) + } else { + regionIDs = append(regionIDs, regionID) + } + } + + // Split index region. + for _, idx := range tblInfo.Indices { + indexPrefix := tablecodec.EncodeTableIndexPrefix(tblInfo.ID, idx.ID) + regionID, err := s.SplitRegionAndScatter(indexPrefix) + if err != nil { + logutil.Logger(ddlLogCtx).Warn("[ddl] pre split table index region failed", zap.String("index", idx.Name.L), zap.Error(err)) + } else { + regionIDs = append(regionIDs, regionID) + } + } + if !waitTableSplitFinish { + return + } + for _, regionID := range regionIDs { + err := s.WaitScatterRegionFinish(regionID) + if err != nil { + logutil.Logger(ddlLogCtx).Warn("[ddl] wait scatter region failed", zap.Uint64("regionID", regionID), zap.Error(err)) + } + } +} + func getTable(store kv.Storage, schemaID int64, tblInfo *model.TableInfo) (table.Table, error) { alloc := autoid.NewAllocator(store, tblInfo.GetDBID(schemaID), tblInfo.IsAutoIncColUnsigned()) tbl, err := table.TableFromMeta(alloc, tblInfo) diff --git a/executor/set_test.go b/executor/set_test.go index 067726c778d23..0a0796c1eb61f 100644 --- a/executor/set_test.go +++ b/executor/set_test.go @@ -339,6 +339,13 @@ func (s *testSuite2) TestSetVar(c *C) { tk.MustQuery("select @@global.read_only;").Check(testkit.Rows("1")) _, err = tk.Exec("set global read_only = abc") c.Assert(err, NotNil) + + // test for tidb_wait_table_split_finish + tk.MustQuery(`select @@session.tidb_wait_table_split_finish;`).Check(testkit.Rows("0")) + tk.MustExec("set tidb_wait_table_split_finish = 1") + tk.MustQuery(`select @@session.tidb_wait_table_split_finish;`).Check(testkit.Rows("1")) + tk.MustExec("set tidb_wait_table_split_finish = 0") + tk.MustQuery(`select @@session.tidb_wait_table_split_finish;`).Check(testkit.Rows("0")) } func (s *testSuite2) TestSetCharset(c *C) { diff --git a/executor/show.go b/executor/show.go index 0414332a3a2aa..99b1aa7a51050 100644 --- a/executor/show.go +++ b/executor/show.go @@ -791,7 +791,11 @@ func (e *ShowExec) fetchShowCreateTable() error { } if tb.Meta().ShardRowIDBits > 0 { - fmt.Fprintf(&buf, "/*!90000 SHARD_ROW_ID_BITS=%d */", tb.Meta().ShardRowIDBits) + fmt.Fprintf(&buf, "/*!90000 SHARD_ROW_ID_BITS=%d ", tb.Meta().ShardRowIDBits) + if tb.Meta().PreSplitRegions > 0 { + fmt.Fprintf(&buf, "PRE_SPLIT_REGIONS=%d ", tb.Meta().PreSplitRegions) + } + buf.WriteString("*/") } if len(tb.Meta().Comment) > 0 { diff --git a/executor/show_test.go b/executor/show_test.go index 018d42d6abaaf..0e3ce9a481991 100644 --- a/executor/show_test.go +++ b/executor/show_test.go @@ -445,6 +445,16 @@ func (s *testSuite2) TestShowCreateTable(c *C) { " `ch2` varbinary(10) DEFAULT NULL\n"+ ") ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin", )) + + tk.MustExec("create table t (a int, b int) shard_row_id_bits = 4 pre_split_regions=3;") + tk.MustQuery("show create table `t`").Check(testutil.RowsWithSep("|", + ""+ + "t CREATE TABLE `t` (\n"+ + " `a` int(11) DEFAULT NULL,\n"+ + " `b` int(11) DEFAULT NULL\n"+ + ") ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin/*!90000 SHARD_ROW_ID_BITS=4 PRE_SPLIT_REGIONS=3 */", + )) + tk.MustExec("drop table t") } func (s *testSuite2) TestShowEscape(c *C) { diff --git a/go.mod b/go.mod index f6055ae5e1455..4392ba138def8 100644 --- a/go.mod +++ b/go.mod @@ -3,38 +3,27 @@ module github.com/pingcap/tidb require ( github.com/BurntSushi/toml v0.3.1 github.com/StackExchange/wmi v0.0.0-20180725035823-b12b22c5341f // indirect - github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 // indirect github.com/blacktear23/go-proxyprotocol v0.0.0-20180807104634-af7a81e8dd0d github.com/boltdb/bolt v1.3.1 // indirect github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect github.com/coreos/bbolt v1.3.0 // indirect - github.com/coreos/etcd v3.3.10+incompatible - github.com/coreos/go-semver v0.2.0 // indirect + github.com/coreos/etcd v3.3.12+incompatible github.com/coreos/go-systemd v0.0.0-20181031085051-9002847aa142 // indirect github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f // indirect github.com/cznic/mathutil v0.0.0-20181122101859-297441e03548 github.com/cznic/sortutil v0.0.0-20150617083342-4c7342852e65 - github.com/dgrijalva/jwt-go v3.2.0+incompatible // indirect github.com/dustin/go-humanize v1.0.0 // indirect - github.com/eknkc/amber v0.0.0-20171010120322-cdade1c07385 // indirect - github.com/etcd-io/gofail v0.0.0-20180808172546-51ce9a71510a // indirect - github.com/ghodss/yaml v1.0.0 // indirect github.com/go-ole/go-ole v1.2.1 // indirect github.com/go-sql-driver/mysql v0.0.0-20170715192408-3955978caca4 github.com/gogo/protobuf v1.2.0 // indirect - github.com/golang/groupcache v0.0.0-20181024230925-c65c006176ff // indirect github.com/golang/protobuf v1.2.0 - github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db // indirect github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c github.com/gorilla/context v1.1.1 // indirect github.com/gorilla/mux v1.6.2 github.com/gorilla/websocket v1.4.0 // indirect - github.com/grpc-ecosystem/go-grpc-middleware v1.0.0 - github.com/grpc-ecosystem/go-grpc-prometheus v1.2.0 // indirect + github.com/grpc-ecosystem/go-grpc-middleware v1.0.1-0.20190118093823-f849b5445de4 github.com/grpc-ecosystem/grpc-gateway v1.5.1 // indirect - github.com/jonboulle/clockwork v0.1.0 // indirect github.com/klauspost/cpuid v0.0.0-20170728055534-ae7887de9fa5 - github.com/mailru/easyjson v0.0.0-20190312143242-1de009706dbe // indirect github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect github.com/montanaflynn/stats v0.0.0-20180911141734-db72e6cae808 // indirect github.com/myesui/uuid v1.0.0 // indirect @@ -44,18 +33,16 @@ require ( github.com/onsi/gomega v1.4.3 // indirect github.com/opentracing/basictracer-go v1.0.0 github.com/opentracing/opentracing-go v1.0.2 - github.com/philhofer/fwd v1.0.0 // indirect github.com/pingcap/check v0.0.0-20190102082844-67f458068fc8 github.com/pingcap/errors v0.11.1 github.com/pingcap/failpoint v0.0.0-20190422094118-d8535965f59b github.com/pingcap/goleveldb v0.0.0-20171020122428-b9ff6c35079e - github.com/pingcap/kvproto v0.0.0-20190215154024-7f2fc73ef562 + github.com/pingcap/kvproto v0.0.0-20190327032727-3d8cb3a30d5d github.com/pingcap/log v0.0.0-20190307075452-bd41d9273596 github.com/pingcap/parser v0.0.0-20190424024541-e2cdb851bce2 - github.com/pingcap/pd v2.1.0-rc.4+incompatible + github.com/pingcap/pd v0.0.0-20190424024702-bd1e2496a669 github.com/pingcap/tidb-tools v2.1.3-0.20190321065848-1e8b48f5c168+incompatible github.com/pingcap/tipb v0.0.0-20190107072121-abbec73437b7 - github.com/pquerna/ffjson v0.0.0-20181028064349-e517b90714f7 // indirect github.com/prometheus/client_golang v0.9.0 github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910 github.com/prometheus/common v0.0.0-20181020173914-7e9e6cabbd39 // indirect @@ -65,19 +52,14 @@ require ( github.com/shurcooL/httpfs v0.0.0-20171119174359-809beceb2371 // indirect github.com/shurcooL/vfsgen v0.0.0-20181020040650-a97a25d856ca // indirect github.com/sirupsen/logrus v1.2.0 - github.com/soheilhy/cmux v0.1.4 // indirect github.com/spaolacci/murmur3 v0.0.0-20180118202830-f09979ecbc72 github.com/struCoder/pidusage v0.1.2 github.com/tiancaiamao/appdash v0.0.0-20181126055449-889f96f722a2 - github.com/tinylib/msgp v1.1.0 // indirect - github.com/tmc/grpc-websocket-proxy v0.0.0-20171017195756-830351dc03c6 // indirect github.com/twinj/uuid v1.0.0 github.com/uber-go/atomic v1.3.2 // indirect github.com/uber/jaeger-client-go v2.15.0+incompatible github.com/uber/jaeger-lib v1.5.0 // indirect - github.com/ugorji/go v0.0.0-20171019201919-bdcc60b419d1 // indirect github.com/unrolled/render v0.0.0-20180914162206-b9786414de4d // indirect - github.com/xiang90/probing v0.0.0-20160813154853-07dd2e8dfe18 // indirect go.uber.org/zap v1.9.1 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e golang.org/x/sys v0.0.0-20190109145017-48ac38b7c8cb // indirect diff --git a/go.sum b/go.sum index 9328cfd82a629..26440dba9819c 100644 --- a/go.sum +++ b/go.sum @@ -6,22 +6,28 @@ github.com/StackExchange/wmi v0.0.0-20180725035823-b12b22c5341f/go.mod h1:3eOhrU github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0= github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973 h1:xJ4a3vCFaGF/jqvzLMYoU8P317H5OQ+Via4RmuPwCS0= github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q= +github.com/bgentry/speakeasy v0.1.0/go.mod h1:+zsyZBPWlz7T6j88CTgSN5bM796AkVf0kBD4zp0CCIs= github.com/blacktear23/go-proxyprotocol v0.0.0-20180807104634-af7a81e8dd0d h1:rQlvB2AYWme2bIB18r/SipGiMEVJYE9U0z+MGoU/LtQ= github.com/blacktear23/go-proxyprotocol v0.0.0-20180807104634-af7a81e8dd0d/go.mod h1:VKt7CNAQxpFpSDz3sXyj9hY/GbVsQCr0sB3w59nE7lU= github.com/boltdb/bolt v1.3.1 h1:JQmyP4ZBrce+ZQu0dY660FMfatumYDLun9hBCUVIkF4= github.com/boltdb/bolt v1.3.1/go.mod h1:clJnj/oiGkjum5o1McbSZDSLxVThjynRyGBgiAx27Ps= +github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI= +github.com/chzyer/readline v0.0.0-20171208011716-f6d7a1f6fbf3/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI= +github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU= github.com/client9/misspell v0.3.4 h1:ta993UF76GwbvJcIo3Y68y/M3WxlpEHPWIGDkJYwzJI= github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw= github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd h1:qMd81Ts1T2OTKmB4acZcyKaMtRnY5Y44NuXGX2GFJ1w= github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd/go.mod h1:sE/e/2PUdi/liOCUjSTXgM1o87ZssimdTWN964YiIeI= github.com/coreos/bbolt v1.3.0 h1:HIgH5xUWXT914HCI671AxuTTqjj64UOFr7pHn48LUTI= github.com/coreos/bbolt v1.3.0/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk= -github.com/coreos/etcd v3.3.10+incompatible h1:jFneRYjIvLMLhDLCzuTuU4rSJUjRplcJQ7pD7MnhC04= -github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= +github.com/coreos/etcd v3.3.12+incompatible h1:pAWNwdf7QiT1zfaWyqCtNZQWCLByQyA3JrSQyuYAqnQ= +github.com/coreos/etcd v3.3.12+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= github.com/coreos/go-semver v0.2.0 h1:3Jm3tLmsgAYcjC+4Up7hJrFBPr+n7rAqYeSw/SZazuY= github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk= +github.com/coreos/go-systemd v0.0.0-20180511133405-39ca1b05acc7/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= github.com/coreos/go-systemd v0.0.0-20181031085051-9002847aa142 h1:3jFq2xL4ZajGK4aZY8jz+DAF0FHjI51BXjjSwCzS1Dk= github.com/coreos/go-systemd v0.0.0-20181031085051-9002847aa142/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4= +github.com/coreos/pkg v0.0.0-20160727233714-3ac0863d7acf/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA= github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f h1:lBNOc5arjvs8E5mO2tbpBpLoyyu8B6e44T7hJy6potg= github.com/coreos/pkg v0.0.0-20180928190104-399ea9e2e55f/go.mod h1:E3G3o1h8I7cfcXa63jLwjI0eiQQMgzzUDFVpN/nH/eA= github.com/cznic/mathutil v0.0.0-20181122101859-297441e03548 h1:iwZdTE0PVqJCos1vaoKsclOGD3ADKpshg3SRtYBbwso= @@ -33,26 +39,29 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= github.com/dgrijalva/jwt-go v3.2.0+incompatible h1:7qlOGliEKZXTDg6OTjfoBKDXWrumCAMpl/TFQ4/5kLM= github.com/dgrijalva/jwt-go v3.2.0+incompatible/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ= +github.com/dustin/go-humanize v0.0.0-20171111073723-bb3d318650d4/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk= +github.com/dustin/go-humanize v0.0.0-20180421182945-02af3965c54e/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk= github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo= github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk= github.com/eknkc/amber v0.0.0-20171010120322-cdade1c07385 h1:clC1lXBpe2kTj2VHdaIu9ajZQe4kcEY9j0NsnDDBZ3o= github.com/eknkc/amber v0.0.0-20171010120322-cdade1c07385/go.mod h1:0vRUJqYpeSZifjYj7uP3BG/gKcuzL9xWVV/Y+cK33KM= -github.com/etcd-io/gofail v0.0.0-20180808172546-51ce9a71510a h1:QNEenQIsGDEEfFNSnN+h6hE1OwnHqTg7Dl9gEk1Cko4= -github.com/etcd-io/gofail v0.0.0-20180808172546-51ce9a71510a/go.mod h1:49H/RkXP8pKaZy4h0d+NW16rSLhyVBt4o6VLJbmOqDE= +github.com/fatih/color v1.7.0/go.mod h1:Zm6kSWBoL9eyXnKyktHP6abPY2pDugNf5KwzbycvMj4= github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I= github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= -github.com/ghodss/yaml v1.0.0 h1:wQHKEahhL6wmXdzwWG11gIVCkOv05bNOh+Rxn0yngAk= -github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04= +github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32 h1:Mn26/9ZMNWSw9C9ERFA1PUxfmGpolnw2v0bKOREu5ew= +github.com/ghodss/yaml v1.0.1-0.20190212211648-25d852aebe32/go.mod h1:GIjDIg/heH5DOkXY3YJ/wNhfHsQHoXGjl8G8amsYQ1I= github.com/go-ole/go-ole v1.2.1 h1:2lOsA72HgjxAuMlKpFiCbHTvu44PIVkZ5hqm3RSdI/E= github.com/go-ole/go-ole v1.2.1/go.mod h1:7FAglXiTm7HKlQRDeOQ6ZNUHidzCWXuZWq/1dTyBNF8= github.com/go-playground/overalls v0.0.0-20180201144345-22ec1a223b7c/go.mod h1:UqxAgEOt89sCiXlrc/ycnx00LVvUO/eS8tMUkWX4R7w= github.com/go-sql-driver/mysql v0.0.0-20170715192408-3955978caca4 h1:3DFRjZdCDhzvxDf0U6/1qAryzOqD7Y5iAj0DJRRl1bs= github.com/go-sql-driver/mysql 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golang.org/x/tools v0.0.0-20190130214255-bb1329dc71a0 h1:iRpjPej1fPzmfoBhMFkp3HdqzF+ytPmAwiQhJGV0zGw= golang.org/x/tools v0.0.0-20190130214255-bb1329dc71a0/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ= google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM= +google.golang.org/genproto v0.0.0-20180608181217-32ee49c4dd80/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= google.golang.org/genproto v0.0.0-20181004005441-af9cb2a35e7f/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc= google.golang.org/genproto v0.0.0-20190108161440-ae2f86662275 h1:9oFlwfEGIvmxXTcY53ygNyxIQtWciRHjrnUvZJCYXYU= google.golang.org/genproto v0.0.0-20190108161440-ae2f86662275/go.mod h1:7Ep/1NZk928CDR8SjdVbjWNpdIf6nzjE3BTgJDr2Atg= google.golang.org/grpc v0.0.0-20180607172857-7a6a684ca69e/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw= +google.golang.org/grpc v1.14.0/go.mod h1:yo6s7OP7yaDglbqo1J04qKzAhqBH6lvTonzMVmEdcZw= google.golang.org/grpc v1.16.0/go.mod h1:0JHn/cJsOMiMfNA9+DeHDlAU7KAAB5GDlYFpa9MZMio= google.golang.org/grpc v1.17.0 h1:TRJYBgMclJvGYn2rIMjj+h9KtMt5r1Ij7ODVRIZkwhk= google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs= +gopkg.in/airbrake/gobrake.v2 v2.0.9/go.mod h1:/h5ZAUhDkGaJfjzjKLSjv6zCL6O0LLBxU4K+aSYdM/U= gopkg.in/alecthomas/gometalinter.v2 v2.0.12/go.mod h1:NDRytsqEZyolNuAgTzJkZMkSQM7FIKyzVzGhjB/qfYo= gopkg.in/alecthomas/kingpin.v3-unstable v3.0.0-20180810215634-df19058c872c/go.mod h1:3HH7i1SgMqlzxCcBmUHW657sD4Kvv9sC3HpL3YukzwA= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY= +gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/cheggaaa/pb.v1 v1.0.25/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw= gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4= gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys= +gopkg.in/gemnasium/logrus-airbrake-hook.v2 v2.1.2/go.mod h1:Xk6kEKp8OKb+X14hQBKWaSkCsqBpgog8nAV2xsGOxlo= gopkg.in/natefinch/lumberjack.v2 v2.0.0 h1:1Lc07Kr7qY4U2YPouBjpCLxpiyxIVoxqXgkXLknAOE8= gopkg.in/natefinch/lumberjack.v2 v2.0.0/go.mod h1:l0ndWWf7gzL7RNwBG7wST/UCcT4T24xpD6X8LsfU/+k= gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ= diff --git a/sessionctx/variable/session.go b/sessionctx/variable/session.go index 47505d955b0b9..c9e46d7b30ecc 100644 --- a/sessionctx/variable/session.go +++ b/sessionctx/variable/session.go @@ -325,6 +325,9 @@ type SessionVars struct { // DDLReorgPriority is the operation priority of adding indices. DDLReorgPriority int + // WaitTableSplitFinish defines the create table pre-split behaviour is sync or async. + WaitTableSplitFinish bool + // EnableStreaming indicates whether the coprocessor request can use streaming API. // TODO: remove this after tidb-server configuration "enable-streaming' removed. EnableStreaming bool @@ -757,6 +760,8 @@ func (s *SessionVars) SetSystemVar(name string, val string) error { s.SlowQueryFile = val case TiDBEnableFastAnalyze: s.EnableFastAnalyze = TiDBOptOn(val) + case TiDBWaitTableSplitFinish: + s.WaitTableSplitFinish = TiDBOptOn(val) } s.systems[name] = val return nil diff --git a/sessionctx/variable/sysvar.go b/sessionctx/variable/sysvar.go index dcde32ee5b689..38b0f6754cab6 100644 --- a/sessionctx/variable/sysvar.go +++ b/sessionctx/variable/sysvar.go @@ -691,6 +691,7 @@ var defaultSysVars = []*SysVar{ {ScopeSession, TiDBEnableRadixJoin, BoolToIntStr(DefTiDBUseRadixJoin)}, {ScopeSession, TiDBCheckMb4ValueInUTF8, BoolToIntStr(config.GetGlobalConfig().CheckMb4ValueInUTF8)}, {ScopeSession, TiDBSlowQueryFile, ""}, + {ScopeSession, TiDBWaitTableSplitFinish, BoolToIntStr(DefTiDBWaitTableSplitFinish)}, } // SynonymsSysVariables is synonyms of system variables. diff --git a/sessionctx/variable/tidb_vars.go b/sessionctx/variable/tidb_vars.go index 20b7eb2f5793d..d40dacb2318f3 100644 --- a/sessionctx/variable/tidb_vars.go +++ b/sessionctx/variable/tidb_vars.go @@ -232,6 +232,9 @@ const ( // It can be: PRIORITY_LOW, PRIORITY_NORMAL, PRIORITY_HIGH TiDBDDLReorgPriority = "tidb_ddl_reorg_priority" + // TiDBWaitTableSplitFinish defines the create table pre-split behaviour is sync or async. + TiDBWaitTableSplitFinish = "tidb_wait_table_split_finish" + // tidb_force_priority defines the operations priority of all statements. // It can be "NO_PRIORITY", "LOW_PRIORITY", "HIGH_PRIORITY", "DELAYED" TiDBForcePriority = "tidb_force_priority" @@ -309,6 +312,7 @@ const ( DefTiDBDDLSlowOprThreshold = 300 DefTiDBUseFastAnalyze = false DefTiDBSkipIsolationLevelCheck = false + DefTiDBWaitTableSplitFinish = false ) // Process global variables. diff --git a/store/mockstore/mocktikv/pd.go b/store/mockstore/mocktikv/pd.go index 8c78f1486724a..31597b7417820 100644 --- a/store/mockstore/mocktikv/pd.go +++ b/store/mockstore/mocktikv/pd.go @@ -20,6 +20,7 @@ import ( "github.com/pingcap/errors" "github.com/pingcap/kvproto/pkg/metapb" + "github.com/pingcap/kvproto/pkg/pdpb" "github.com/pingcap/pd/client" ) @@ -98,7 +99,7 @@ func (c *pdClient) GetStore(ctx context.Context, storeID uint64) (*metapb.Store, return store, nil } -func (c *pdClient) GetAllStores(ctx context.Context) ([]*metapb.Store, error) { +func (c *pdClient) GetAllStores(ctx context.Context, opts ...pd.GetStoreOption) ([]*metapb.Store, error) { panic(errors.New("unimplemented")) } @@ -108,3 +109,11 @@ func (c *pdClient) UpdateGCSafePoint(ctx context.Context, safePoint uint64) (uin func (c *pdClient) Close() { } + +func (c *pdClient) ScatterRegion(ctx context.Context, regionID uint64) error { + return nil +} + +func (c *pdClient) GetOperator(ctx context.Context, regionID uint64) (*pdpb.GetOperatorResponse, error) { + return &pdpb.GetOperatorResponse{Status: pdpb.OperatorStatus_SUCCESS}, nil +} diff --git a/store/tikv/backoff.go b/store/tikv/backoff.go index 84dc8e79580d2..693ae62c247bb 100644 --- a/store/tikv/backoff.go +++ b/store/tikv/backoff.go @@ -205,6 +205,8 @@ const ( deleteRangeOneRegionMaxBackoff = 100000 rawkvMaxBackoff = 20000 splitRegionBackoff = 20000 + scatterRegionBackoff = 20000 + waitScatterRegionFinishBackoff = 120000 ) // CommitMaxBackoff is max sleep time of the 'commit' command diff --git a/store/tikv/split_region.go b/store/tikv/split_region.go index 985545a80ef28..b9c8a6648b0dc 100644 --- a/store/tikv/split_region.go +++ b/store/tikv/split_region.go @@ -19,6 +19,8 @@ import ( "github.com/pingcap/errors" "github.com/pingcap/kvproto/pkg/kvrpcpb" + "github.com/pingcap/kvproto/pkg/metapb" + "github.com/pingcap/kvproto/pkg/pdpb" "github.com/pingcap/tidb/kv" "github.com/pingcap/tidb/store/tikv/tikvrpc" "github.com/pingcap/tidb/util/logutil" @@ -28,6 +30,11 @@ import ( // SplitRegion splits the region contains splitKey into 2 regions: [start, // splitKey) and [splitKey, end). func (s *tikvStore) SplitRegion(splitKey kv.Key) error { + _, err := s.splitRegion(splitKey) + return err +} + +func (s *tikvStore) splitRegion(splitKey kv.Key) (*metapb.Region, error) { logutil.Logger(context.Background()).Info("start split region", zap.Binary("at", splitKey)) bo := NewBackoffer(context.Background(), splitRegionBackoff) @@ -42,25 +49,25 @@ func (s *tikvStore) SplitRegion(splitKey kv.Key) error { for { loc, err := s.regionCache.LocateKey(bo, splitKey) if err != nil { - return errors.Trace(err) + return nil, errors.Trace(err) } if bytes.Equal(splitKey, loc.StartKey) { logutil.Logger(context.Background()).Info("skip split region", zap.Binary("at", splitKey)) - return nil + return nil, nil } res, err := sender.SendReq(bo, req, loc.Region, readTimeoutShort) if err != nil { - return errors.Trace(err) + return nil, errors.Trace(err) } regionErr, err := res.GetRegionError() if err != nil { - return errors.Trace(err) + return nil, errors.Trace(err) } if regionErr != nil { err := bo.Backoff(BoRegionMiss, errors.New(regionErr.String())) if err != nil { - return errors.Trace(err) + return nil, errors.Trace(err) } continue } @@ -68,6 +75,74 @@ func (s *tikvStore) SplitRegion(splitKey kv.Key) error { zap.Binary("at", splitKey), zap.Stringer("new region left", res.SplitRegion.GetLeft()), zap.Stringer("new region right", res.SplitRegion.GetRight())) - return nil + return res.SplitRegion.GetLeft(), nil + } +} + +func (s *tikvStore) scatterRegion(regionID uint64) error { + logutil.Logger(context.Background()).Info("start scatter region", + zap.Uint64("regionID", regionID)) + bo := NewBackoffer(context.Background(), scatterRegionBackoff) + for { + err := s.pdClient.ScatterRegion(context.Background(), regionID) + if err != nil { + err = bo.Backoff(BoRegionMiss, errors.New(err.Error())) + if err != nil { + return errors.Trace(err) + } + continue + } + break + } + logutil.Logger(context.Background()).Info("scatter region complete", + zap.Uint64("regionID", regionID)) + return nil +} + +func (s *tikvStore) WaitScatterRegionFinish(regionID uint64) error { + logutil.Logger(context.Background()).Info("wait scatter region", + zap.Uint64("regionID", regionID)) + bo := NewBackoffer(context.Background(), waitScatterRegionFinishBackoff) + logFreq := 0 + for { + resp, err := s.pdClient.GetOperator(context.Background(), regionID) + if err == nil && resp != nil { + if !bytes.Equal(resp.Desc, []byte("scatter-region")) || resp.Status != pdpb.OperatorStatus_RUNNING { + logutil.Logger(context.Background()).Info("wait scatter region finished", + zap.Uint64("regionID", regionID)) + return nil + } + if logFreq%10 == 0 { + logutil.Logger(context.Background()).Info("wait scatter region", + zap.Uint64("regionID", regionID), + zap.String("desc", string(resp.Desc)), + zap.String("status", pdpb.OperatorStatus_name[int32(resp.Status)])) + } + logFreq++ + } + if err != nil { + err = bo.Backoff(BoRegionMiss, errors.New(err.Error())) + } else { + err = bo.Backoff(BoRegionMiss, errors.New("wait scatter region timeout")) + } + if err != nil { + return errors.Trace(err) + } + } + +} + +func (s *tikvStore) SplitRegionAndScatter(splitKey kv.Key) (uint64, error) { + left, err := s.splitRegion(splitKey) + if err != nil { + return 0, err + } + if left == nil { + return 0, nil + } + err = s.scatterRegion(left.Id) + if err != nil { + return 0, err } + return left.Id, nil } diff --git a/store/tikv/store_test.go b/store/tikv/store_test.go index d55717f7b20ac..66bd99c286e43 100644 --- a/store/tikv/store_test.go +++ b/store/tikv/store_test.go @@ -22,6 +22,7 @@ import ( "github.com/pingcap/errors" pb "github.com/pingcap/kvproto/pkg/kvrpcpb" "github.com/pingcap/kvproto/pkg/metapb" + "github.com/pingcap/kvproto/pkg/pdpb" "github.com/pingcap/pd/client" "github.com/pingcap/tidb/kv" "github.com/pingcap/tidb/store/mockoracle" @@ -168,7 +169,7 @@ func (c *mockPDClient) GetStore(ctx context.Context, storeID uint64) (*metapb.St return c.client.GetStore(ctx, storeID) } -func (c *mockPDClient) GetAllStores(ctx context.Context) ([]*metapb.Store, error) { +func (c *mockPDClient) GetAllStores(ctx context.Context, opts ...pd.GetStoreOption) ([]*metapb.Store, error) { c.RLock() defer c.Unlock() @@ -184,6 +185,14 @@ func (c *mockPDClient) UpdateGCSafePoint(ctx context.Context, safePoint uint64) func (c *mockPDClient) Close() {} +func (c *mockPDClient) ScatterRegion(ctx context.Context, regionID uint64) error { + return nil +} + +func (c *mockPDClient) GetOperator(ctx context.Context, regionID uint64) (*pdpb.GetOperatorResponse, error) { + return &pdpb.GetOperatorResponse{Status: pdpb.OperatorStatus_SUCCESS}, nil +} + type checkRequestClient struct { Client priority pb.CommandPri