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From "Mukul Kumar Singh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDDS-890) Handle OverlappingFileLockException during writeStateMachineData in ContainerStateMachine
Date Sun, 02 Dec 2018 19:03:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mukul Kumar Singh updated HDDS-890:
-----------------------------------
    Status: Patch Available  (was: Open)

> Handle  OverlappingFileLockException during writeStateMachineData in ContainerStateMachine

> -------------------------------------------------------------------------------------------
>
>                 Key: HDDS-890
>                 URL: https://issues.apache.org/jira/browse/HDDS-890
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>          Components: Ozone Datanode
>    Affects Versions: 0.4.0
>            Reporter: Shashikant Banerjee
>            Assignee: Shashikant Banerjee
>            Priority: Major
>         Attachments: HDDS-890.000.patch
>
>
> With raft log entries getting truncated, the corresponding writeStateMachineData futures
doing actual chunk writes can not aborted. The next subsequent log entry corresponding to
the same client request may end up writing the same chunk file concurrently hitting OverlappingFileLockException.
This Jira aims to address this issue by appending logIndex and term to every tmp chunkFile
name created during writeStateMachineData call,



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