[
https://issues.apache.org/jira/browse/HDFS-15567?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Xiaoqiao He updated HDFS-15567:
-------------------------------
Fix Version/s: 3.2.2
> [SBN Read] HDFS should expose msync() API to allow downstream applications
> call it explicitly.
> ----------------------------------------------------------------------------------------------
>
> Key: HDFS-15567
> URL: https://issues.apache.org/jira/browse/HDFS-15567
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: ha, hdfs-client
> Affects Versions: 2.10.0
> Reporter: Konstantin Shvachko
> Assignee: Konstantin Shvachko
> Priority: Major
> Fix For: 3.2.2, 3.3.1, 3.4.0, 3.1.5, 2.10.2, 3.2.3
>
> Attachments: HDFS-15567.001.patch, HDFS-15567.002.patch
>
>
> Consistent reads from Standby introduced {{msync()}} API HDFS-13688, which
> updates client's state ID with current state of the Active NameNode to
> guarantee consistency of subsequent calls to an ObserverNode. Currently this
> API is exposed via {{DFSClient}} only, which makes it hard for applications
> to access {{msync()}}. One way is to use something like this:
> {code}
> if(fs instanceof DistributedFileSystem) {
> ((DistributedFileSystem)fs).getClient().msync();
> }
> {code}
> This should be exposed both for {{FileSystem}} and {{FileContext}}.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org
For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org
