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Posted to hdfs-issues@hadoop.apache.org by "Bharat Viswanadham (JIRA)" <ji...@apache.org> on 2019/07/02 18:42:01 UTC

[jira] [Created] (HDDS-1757) Use ExecutorService in OzoneManagerStateMachine

Bharat Viswanadham created HDDS-1757:
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             Summary: Use ExecutorService in OzoneManagerStateMachine
                 Key: HDDS-1757
                 URL: https://issues.apache.org/jira/browse/HDDS-1757
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
            Reporter: Bharat Viswanadham
            Assignee: Bharat Viswanadham


In the current code in applyTransaction we have 

CompletableFuture<Message> future = CompletableFuture
 .supplyAsync(() -> runCommand(request, trxLogIndex)); We are using ForkJoin#commonPool.

With the current approach we have 2 issues:
 # Thread exhausts when using this common pool.
 # OM DB's across replica can be out of sync when the apply transactions are applied in out of order.



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