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https://issues.apache.org/jira/browse/HBASE-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13413010#comment-13413010
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Jesse Yates commented on HBASE-5547:
------------------------------------
{quote}
My reservation to the 2nd part is that folks will have their own retention
policy, which is going to be special to their organization and that HBase
should not (try to) dictate that.
Not feeling very strongly about this, though. As long as the TTL log cleaner is
the default and the log term archiver is just a plugin (both of which are the
case, right?).
{quote}
- Lars on RB
My response:
{quote}
"both of which are the case, right?"
yup.
"On that note, I wonder if the Hlog cleaner and HFile cleaner should have a
joint policy(?)"
That sounds subticket worthy. But interesting idea. It wouldn't be too hard to
do with the existing setup, but out of scope ;)
{quote}
If everyone is good with this, I'll push up a new version to RB that has the
clean up from the reviews, abstracts out the client-zk stuff to an example.
> 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: 0.94.2
>
> Attachments: hbase-5447-v8.patch, hbase-5447-v8.patch,
> hbase-5547-v9.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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