Allowing Jdbc FetchSize Configuration for handling large rows #2028
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Codecov ReportAll modified and coverable lines are covered by tests ✅
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## main #2028 +/- ##
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+ Coverage 45.40% 52.97% +7.56%
+ Complexity 3680 1371 -2309
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Files 843 378 -465
Lines 49989 20680 -29309
Branches 5261 2092 -3169
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- Hits 22700 10955 -11745
+ Misses 25620 9045 -16575
+ Partials 1669 680 -989
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...-to-spanner/src/main/java/com/google/cloud/teleport/v2/options/SourceDbToSpannerOptions.java
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manitgupta
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bharadwaj-aditya
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Nov 28, 2024
...-to-spanner/src/main/java/com/google/cloud/teleport/v2/options/SourceDbToSpannerOptions.java
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Allowing Jdbc FetchSize Configuration for handling large rows.
Overview
Default fetch size used by
JdbcIOis 50_000 rows.Large (in terms of memory size) rows can lead to memory errors and
JdbcIOrecommends tuning fetch size in case of memory errors. Please see here.Here we allow the user to tune the fetch size via parameters.
Auto inference of fetchsize will be taken as a separate task as it needs careful scale testing.