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https://issues.apache.org/jira/browse/HBASE-20742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16517062#comment-16517062
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Duo Zhang commented on HBASE-20742:
-----------------------------------
[~stack] Follow-on issue for HBASE-20708. FYI.
> Always create WAL directory for region server
> ---------------------------------------------
>
> Key: HBASE-20742
> URL: https://issues.apache.org/jira/browse/HBASE-20742
> Project: HBase
> Issue Type: Bug
> Reporter: Duo Zhang
> Assignee: Duo Zhang
> Priority: Major
> Fix For: 3.0.0, 2.1.0
>
> Attachments: HBASE-20742.patch
>
>
> After HBASE-20708, when master restart, we will scan the wal directory to
> find out the live servers. In most cases this is OK, as when we create a
> HRegion instance at RS side, we will create a WAL for it, and the directory
> which contains the server name will be there, even if user always use
> SKIP_WAL.
> But there could still be problem as the directory is created in the
> implementation of WAL, not in the initialization of region server, so if user
> uses DisabledWALProvider then we will be in trouble.
> So let's fix it.
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