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Posted to hdfs-dev@hadoop.apache.org by "Shashikant Banerjee (JIRA)" <ji...@apache.org> on 2018/07/10 10:55:00 UTC

[jira] [Created] (HDDS-244) PutKey should get executed only if all WriteChunk request fior the same block complete in Ratis

Shashikant Banerjee created HDDS-244:
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             Summary: PutKey should get executed only if all WriteChunk request fior the same block complete in Ratis
                 Key: HDDS-244
                 URL: https://issues.apache.org/jira/browse/HDDS-244
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
          Components: Ozone Datanode
            Reporter: Shashikant Banerjee
            Assignee: Shashikant Banerjee
             Fix For: 0.2.1


In Ratis, all the WriteChunk Requests are submitted to Ratis with Replication_Majority semantics. That means, the command execution from Ratis completes any 2 of 3 datanodes complete execution of the request. It might happen that on one of the follower, PutKey might start execution while all the WriteChunks requests processing  for the same block are still in progress. There needs to be a synchronization enforced between PutKey and Corresponding WriteChunkrequets in the ContainerStateMachine. This Jira aims to address this.



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