Yunhong Zheng created FLINK-30971:
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Summary: Modify the default value of parameter
'table.exec.local-hash-agg.adaptive.sampling-threshold'
Key: FLINK-30971
URL: https://issues.apache.org/jira/browse/FLINK-30971
Project: Flink
Issue Type: Bug
Components: Table SQL / Runtime
Affects Versions: 1.17.0
Reporter: Yunhong Zheng
Fix For: 1.17.0
In our test environment, we set the default parallelism to 1 and got the most
appropriate default value of parameter
'table.exec.local-hash-agg.adaptive.sampling-threshold' is 5000000. However,
for these batch jobs with high parallelism in produce environment, the amount
of data in single parallelism is almost less than 5000000. Therefore, after
testing, we found that set to 500000 can get better results.
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