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https://issues.apache.org/jira/browse/HBASE-25145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17206647#comment-17206647
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Michael Stack commented on HBASE-25145:
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I wrote a test and it doesn't look like WALReader thread quits. It stays up as
long as there is a WAL around – as per [~zhangduo] above – which will be the
case given how HBASE-25055 is implemented. Let me try some more. Shout if you
have a pointer on what to look at [~huaxiangsun] - thanks.
(The test did find a good issue – see HBASE-25151)
> WALReader quits if nothing to replicate (and won't restart)
> -----------------------------------------------------------
>
> Key: HBASE-25145
> URL: https://issues.apache.org/jira/browse/HBASE-25145
> Project: HBase
> Issue Type: Sub-task
> Reporter: Michael Stack
> Priority: Major
>
> Noticed by [~huaxiangsun] in his review of HBASE-25055 "Add ReplicationSource
> for meta WALs; add enable/disable w…"
> {quote}bq. Eventually, the meta wal file will be gced and there is no more
> logs in the queue. In that case, the walReader thread will quit. When the
> meta region is moved back, it does not seem that walReader thread will be
> restarted. So it seems that something is broken.
> {quote}
> This issue is about writing a test to run the above scenario and fix any
> probs. found.
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