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[flink] Optimizing parallelism for fixed bucekt and non-partitioned t… #4643

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Dec 6, 2024
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[flink] Optimizing parallelism for fixed bucekt and non-partitioned t… #4643

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[flink] Optimizing parallelism for fixed bucekt and non-partitioned t…
LinMingQiang Dec 4, 2024
4c14a2a
[flink] Optimizing parallelism for fixed bucekt and non-partitioned t…
LinMingQiang Dec 4, 2024
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10 changes: 10 additions & 0 deletions ...link/paimon-flink-common/src/main/java/org/apache/paimon/flink/sink/FlinkSinkBuilder.java
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Original file line number Diff line number Diff line change
Expand Up @@ -265,6 +265,16 @@ protected DataStreamSink<?> buildDynamicBucketSink(
}

protected DataStreamSink<?> buildForFixedBucket(DataStream<InternalRow> input) {
int bucketNums = table.bucketSpec().getNumBuckets();
if (parallelism == null
&& bucketNums < input.getParallelism()
&& table.partitionKeys().isEmpty()) {
// For non-partitioned table, if the bucketNums is less than job parallelism.
LOG.warn(
"For non-partitioned table, if bucketNums is less than the parallelism of inputOperator,"
+ " then the parallelism of writerOperator will be set to bucketNums.");
parallelism = bucketNums;
}
DataStream<InternalRow> partitioned =
partition(
input,
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