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https://issues.apache.org/jira/browse/HDDS-244?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shashikant Banerjee updated HDDS-244:
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Description: 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 WriteChunk requests in the ContainerStateMachine. This Jira aims
to address this. (was: 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.)
> PutKey should get executed only if all WriteChunk request for 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
>Priority: Major
> 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 WriteChunk requests in the ContainerStateMachine. This Jira
> aims to address this.
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