[feat](mtmv)mtmv support paimon partition refresh(#43959,#44911) #45660
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### What problem does this PR solve? Previously, when using Paimon to create MTMV, it was not possible to perceive changes in partition lists and data, so only `refresh materialized view mv1 complete` could be used to force full refresh. This PR obtains the partition list of Paimon, the last update time of the partition, and the latest snapshotId of the table. Therefore, MTMV can be partitioned based on Paimon tables and perceive changes in data, automatically refreshing partitions ### Release note mtmv support paimon partition refresh
…the latest data (apache#44911) Problem Summary: - add `PaimonMetadataCacheMgr` in `ExternalMetaCacheMgr` to manage snapshotCache of paimon table - move paimonSchemaCache to PaimonMetadataCacheMgr, and add schemaId as part of key - PaimonExternalTable overrides the methods in ExternalTable and supports partition pruning - PaimonExternalTable implements the MvcTable interface, supporting the retrieval of snapshot data from the cache during queries to avoid cache refreshes that may result in different versions of metadata being used in a single query - MTMVTask retrieves snapshot data of mvccTable before the task starts to avoid cache refresh that may result in different versions of metadata being used in a single refresh task Paimon queries the data in the cache instead of querying the latest data behavior changes of query paimon table: - FE has just started and is query the latest data - Paimon data has changed, Doris is still query the previous data - After the snapshot cache expires, Doris will query the latest data - desc paimon; The schema corresponding to the snapshotId in the snapshot cache is displayed
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morrySnow
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Dec 24, 2024
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PR approved by at least one committer and no changes requested. |
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PR approved by anyone and no changes requested. |
zddr
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Dec 24, 2024
…43959 apache#44911 (apache#45660) pick: apache#44911 apache#43959 only pick code about paimon, not pick some code about MTMV REFRESH
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pick: #44911 #43959
only pick code about paimon, not pick some code about MTMV REFRESH