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https://issues.apache.org/jira/browse/HBASE-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13420226#comment-13420226
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Jesse Yates commented on HBASE-5547:
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{quote}
Meaning either sf.getPath() or sf.getReader() was null.
{quote}
Looked through the code and can't say I see that was possible (though it seems
the most likely given the setting/checking done on the store file). Looking
through the test of the code, it doesn't look like an issue if the reader is
null since it either gets closed immediately or is re-created when needed.
The getPath() call could be bad, but its not doing anything funky and we would
have seen a warning/error earlier in the run if that had actually been a
problem.
{quote}
For the addendum, if TimeToLiveHFileCleaner is removed from
TestZooKeeperTableArchiveClient, we should add test for it since it is a new
class introduced by this feature.
{quote}
It is tested in o.a.h.h.master.cleaner.TestHFileCleaner. This change just
cleans up the test so we don't have to worry about interaction with the
TTLCleaner.
> 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, 0.94.2
>
> Attachments: 5547-v12.txt, 5547-v16.txt, hbase-5447-v8.patch,
> hbase-5447-v8.patch, hbase-5547-v9.patch, java_HBASE-5547.addendum,
> 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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