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https://issues.apache.org/jira/browse/HBASE-18099?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16083392#comment-16083392
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Hudson commented on HBASE-18099:
--------------------------------
FAILURE: Integrated in Jenkins build HBase-1.4 #807 (See
[https://builds.apache.org/job/HBase-1.4/807/])
HBASE-18358 Backport HBASE-18099 'FlushSnapshotSubprocedure should wait (tedyu:
rev e1bf966f93d32127de205dfc2096d8daff104507)
* (edit)
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/snapshot/FlushSnapshotSubprocedure.java
> FlushSnapshotSubprocedure should wait for concurrent Region#flush() to finish
> -----------------------------------------------------------------------------
>
> Key: HBASE-18099
> URL: https://issues.apache.org/jira/browse/HBASE-18099
> Project: HBase
> Issue Type: Bug
> Reporter: Ted Yu
> Assignee: Ted Yu
> Priority: Critical
> Fix For: 2.0.0, 1.4.0
>
> Attachments: 18099.v1.txt, 18099.v2.txt, 18099.v3.txt, 18099.v4.txt
>
>
> In the following thread:
> http://search-hadoop.com/m/HBase/YGbbMXkeHlI9zo
> Jacob described the scenario where data from certain region were missing in
> the snapshot.
> Here was related region server log:
> https://pastebin.com/1ECXjhRp
> He pointed out that concurrent flush from MemStoreFlusher.1 thread was not
> initiated from the thread pool for snapshot.
> In RegionSnapshotTask#call() method there is this:
> {code}
> region.flush(true);
> {code}
> The return value is not checked.
> In HRegion#flushcache(), Result.CANNOT_FLUSH may be returned due to:
> {code}
> String msg = "Not flushing since "
> + (writestate.flushing ? "already flushing"
> : "writes not enabled");
> {code}
> This implies that FlushSnapshotSubprocedure may incorrectly skip waiting for
> the concurrent flush to complete.
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