[jira] [Created] (FLINK-27070) Reuse FileFormat instead of DecodingFormat/EncodingFormat to ensure thread safety.

["Caizhi Weng (Jira)" <ji...@apache.org>]

Caizhi Weng created FLINK-27070:
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             Summary: Reuse FileFormat instead of DecodingFormat/EncodingFormat to ensure thread safety.
                 Key: FLINK-27070
                 URL: https://issues.apache.org/jira/browse/FLINK-27070
             Project: Flink
          Issue Type: Sub-task
          Components: Table Store
    Affects Versions: 0.1.0
            Reporter: Caizhi Weng
             Fix For: 0.1.0


When testing table store I'm faced with the following warning messages:
{code}
org.apache.org.impl.MemoryManagerImpl [] - Owner thread expected Thread[Writer -> Local Committer (1/16)#0,5,Flink Task Threads], got Thread[pool-8-thread-1,5,Flink Task Threads]
{code}

This is because {{OrcBulkWriterFactory}} is not thread safe (it keeps {{WriterOptions}} as a class member and creates writers from the same {{WriterOptions}} object, which is not thread safe).

What we should do is to reuse {{FileFormat}} instead of {{DecodingFormat}}/{{EncodingFormat}} to ensure thread safety.



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