[jira] [Work started] (HDFS-13688) Introduce msync API call

["Chen Liang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDFS-13688?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on HDFS-13688 started by Chen Liang.
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> Introduce msync API call
> ------------------------
>
>                 Key: HDFS-13688
>                 URL: https://issues.apache.org/jira/browse/HDFS-13688
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Chen Liang
>            Assignee: Chen Liang
>            Priority: Major
>
> As mentioned in the design doc in HDFS-12943, to ensure consistent read, we need to introduce an RPC call {{msync}}. Specifically, client can issue a msync call to Observer node along with a transactionID. The msync will only return when the Observer's transactionID has caught up to the given ID. This JIRA is to add this API.



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