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https://issues.apache.org/jira/browse/HBASE-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13456276#comment-13456276
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Ted Yu commented on HBASE-5547:
-------------------------------
Trunk patch was integrated in July.
According to Todd, we shouldn't have kept this issue open for so long.
Please open a separate issue for backporting. Actually I don't think this is a
small feature.
We should also iron out flaky tests in trunk.
In build #3334, I saw:
{code}
Failed tests:
testHFileCleaning(org.apache.hadoop.hbase.master.cleaner.TestHFileCleaner):
expected:<1> but was:<0>
{code}
> Don't delete HFiles when in "backup mode"
> -----------------------------------------
>
> Key: HBASE-5547
> URL: https://issues.apache.org/jira/browse/HBASE-5547
> Project: HBase
> Issue Type: New Feature
> Reporter: Lars Hofhansl
> Assignee: Jesse Yates
> Fix For: 0.96.0, 0.94.3
>
> Attachments: 5547.addendum-v3, 5547-addendum-v4.txt, 5547-v12.txt,
> 5547-v16.txt, hbase-5447-v8.patch, hbase-5447-v8.patch,
> hbase-5547-0.94-backport-v0.patch, hbase-5547-v9.patch,
> java_HBASE-5547.addendum, java_HBASE-5547.addendum-v1,
> java_HBASE-5547.addendum-v2, java_HBASE-5547_v13.patch,
> java_HBASE-5547_v14.patch, java_HBASE-5547_v15.patch,
> java_HBASE-5547_v4.patch, java_HBASE-5547_v5.patch, java_HBASE-5547_v6.patch,
> java_HBASE-5547_v7.patch
>
>
> This came up in a discussion I had with Stack.
> It would be nice if HBase could be notified that a backup is in progress (via
> a znode for example) and in that case either:
> 1. rename HFiles to be delete to <file>.bck
> 2. rename the HFiles into a special directory
> 3. rename them to a general trash directory (which would not need to be tied
> to backup mode).
> That way it should be able to get a consistent backup based on HFiles (HDFS
> snapshots or hard links would be better options here, but we do not have
> those).
> #1 makes cleanup a bit harder.
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