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https://issues.apache.org/jira/browse/HBASE-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13262207#comment-13262207
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[email protected] commented on HBASE-5547:
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src/main/java/org/apache/hadoop/hbase/HConstants.java
<https://reviews.apache.org/r/4633/#comment15915>
Things shared across, IMO, should stay here. Also, the znode style seems to
be to put it in constants. Probably a bigger issue around how the zkutil works.
src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
<https://reviews.apache.org/r/4633/#comment15916>
done.
src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
<https://reviews.apache.org/r/4633/#comment15921>
@Himanshu - yeah, that should help a bit.
src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
<https://reviews.apache.org/r/4633/#comment15977>
not anymore - new version ignores specifying an archive dir and instead
goes with a cluster wide config.
src/main/java/org/apache/hadoop/hbase/client/HFileArchiveManager.java
<https://reviews.apache.org/r/4633/#comment15980>
Done.
src/main/java/org/apache/hadoop/hbase/client/HFileArchiveManager.java
<https://reviews.apache.org/r/4633/#comment16003>
done.
src/main/java/org/apache/hadoop/hbase/client/HFileArchiveManager.java
<https://reviews.apache.org/r/4633/#comment16004>
this class is more of just a way to wrap this up from the admin. Otherwise,
it would just be there.
src/main/java/org/apache/hadoop/hbase/client/HFileArchiveManager.java
<https://reviews.apache.org/r/4633/#comment16005>
has to be added, since createWithParents just creates the znode, not the
data in that node. Could modify ZKUtil, but this seemed sufficient and don't
think we have a lot of use cases where the node has data. If we do, think it
would be reasonable to add a zk call.
In terms of cost, its basically 1 ping to the server to ensure that the
node exists, which would have to happen anyways if we create the table node
since we can't bundle calls together until we make ZK 3.4 a requirement.
src/main/java/org/apache/hadoop/hbase/master/CatalogJanitor.java
<https://reviews.apache.org/r/4633/#comment16006>
moved to o.a.h.h.backup package.
src/main/java/org/apache/hadoop/hbase/regionserver/HFileArchiveMonitor.java
<https://reviews.apache.org/r/4633/#comment16007>
Moved to o.a.h.h.backup, but then still needs to be public.
src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
<https://reviews.apache.org/r/4633/#comment16008>
done.
src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
<https://reviews.apache.org/r/4633/#comment16009>
done.
src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
<https://reviews.apache.org/r/4633/#comment16010>
nope as it just uses the passed in zk, rather than creating its own. start
here is just a way to bootstrap it to the current state of the system.
src/main/java/org/apache/hadoop/hbase/regionserver/Store.java
<https://reviews.apache.org/r/4633/#comment16011>
Yeah, but if you have an IOException creating a directory you are kind of
hosed anyways.
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment16012>
Turns out this is overly complicated based on the fact that hashes here are
incredibly unlikely to conflict, so still doing a timestamp, but this time just
appending the ts to the name of the file and moving it, rather than all this
business with directories.
src/main/java/org/apache/hadoop/hbase/zookeeper/HFileArchiveTracker.java
<https://reviews.apache.org/r/4633/#comment16013>
gone, in backup (see above).
src/main/java/org/apache/hadoop/hbase/zookeeper/RegionServerHFileTracker.java
<https://reviews.apache.org/r/4633/#comment16014>
yeah, we are collecting them here, but since its used across all, moved
them to their own package.
src/main/java/org/apache/hadoop/hbase/zookeeper/RegionServerHFileTracker.java
<https://reviews.apache.org/r/4633/#comment16015>
its used lower, so RS can hook in confirming joining archiving.
src/main/java/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.java
<https://reviews.apache.org/r/4633/#comment16016>
agreed. Someone should think about it some more and file a jira. Maybe some
configuration based loading of short-lived visitor-like classes?
- Jesse
On 2012-04-07 19:51:11, Jesse Yates wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/4633/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2012-04-07 19:51:11)
bq.
bq.
bq. Review request for hbase, Michael Stack and Lars Hofhansl.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. Essentially, whenever an hfile would be deleted, it is instead moved to
the archive directory. In this impl, the archive directory is on a per table
basis, but defaults to '.archive'. Removing hfiles occurs in three places -
compaction, merge and catalog janitor. The former and two latter are distinctly
different code paths, but but did pull out some similarities. The latter two
end up calling the same method, so there should be a reasonable amount of
overlap.
bq.
bq. Implementation wise:
bq. Updated the HMasterInterface to pass the calls onto the zookeeper.
bq. Added a zk listener to handle updates from the master to the RS to
backup.
bq. Added a utility for removing files and finding archive directories
bq. Added tests for the regionserver and catalogjanitor approaches.
bq. Added creation of manager in regionserver.
bq.
bq.
bq. This addresses bug HBASE-5547.
bq. https://issues.apache.org/jira/browse/HBASE-5547
bq.
bq.
bq. Diffs
bq. -----
bq.
bq. src/main/java/org/apache/hadoop/hbase/HConstants.java a4b989e
bq. src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java 16e4017
bq. src/main/java/org/apache/hadoop/hbase/client/HFileArchiveManager.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/master/CatalogJanitor.java 79d5fdd
bq. src/main/java/org/apache/hadoop/hbase/master/HMaster.java fb21bdd
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/HFileArchiveMonitor.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java c3df319
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
8a61f7d
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerServices.java
6884d53
bq. src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 509a467
bq. src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/zookeeper/HFileArchiveTracker.java
PRE-CREATION
bq.
src/main/java/org/apache/hadoop/hbase/zookeeper/RegionServerHFileTracker.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/zookeeper/ZooKeeperWatcher.java
4fc105f
bq. src/main/resources/hbase-default.xml 44ee689
bq. src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
41616c8
bq. src/test/java/org/apache/hadoop/hbase/master/TestCatalogJanitor.java
b4dcb83
bq.
src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionHFileArchiving.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/util/HFileArchiveTestingUtil.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/util/MockRegionServerServices.java
7d02759
bq.
bq. Diff: https://reviews.apache.org/r/4633/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq. Added two tests for the separate cases - archiving via the regionserver
and for the catalog tracker. Former runs in a mini cluster and also touches the
changes to HMasterInterface and zookeeper.
bq.
bq.
bq. Thanks,
bq.
bq. Jesse
bq.
bq.
> 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
>
> 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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