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https://issues.apache.org/jira/browse/HBASE-5547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13245987#comment-13245987
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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/#comment14456>
There is no mentioning of HFile in the name of znode.
What if another archive scheme comes up in the future ?
src/main/java/org/apache/hadoop/hbase/ipc/HMasterInterface.java
<https://reviews.apache.org/r/4633/#comment14433>
What is the counterpart for disableHFileBackup() where backup for all
tables is enabled ?
src/main/java/org/apache/hadoop/hbase/regionserver/HFileArchiveManager.java
<https://reviews.apache.org/r/4633/#comment14435>
License.
src/main/java/org/apache/hadoop/hbase/regionserver/HFileArchiveManager.java
<https://reviews.apache.org/r/4633/#comment14436>
'or not' is not needed.
src/main/java/org/apache/hadoop/hbase/regionserver/HFileArchiveManager.java
<https://reviews.apache.org/r/4633/#comment14437>
Remove empty line.
src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
<https://reviews.apache.org/r/4633/#comment14438>
white space.
src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
<https://reviews.apache.org/r/4633/#comment14441>
Should we log if rss == null ?
Since in that case we cannot perform desired archiving.
src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
<https://reviews.apache.org/r/4633/#comment14439>
Should they be named hFileArchive{Manager,Tracker} ?
src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerServices.java
<https://reviews.apache.org/r/4633/#comment14440>
The leading 'get ' is not necessary.
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14442>
License.
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14443>
Please check the return value from mkdirs().
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14444>
Please check the return value.
Should resolveAndCopyFile() be enclosed in a try block ?
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14445>
The code at line 92 doesn't 'keep' HFiles.
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14446>
This doesn't match the fs.rename() call.
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14447>
What about non-directory files ?
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14448>
Should include file in log message.
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14449>
Move this to line 197.
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14450>
Should this be contingent on success being true ?
src/main/java/org/apache/hadoop/hbase/util/HFileArchiveUtil.java
<https://reviews.apache.org/r/4633/#comment14451>
Move else if to line 219 and enclose LOG.debug in curly braces.
src/main/java/org/apache/hadoop/hbase/zookeeper/HFileArchiveTracker.java
<https://reviews.apache.org/r/4633/#comment14434>
Add license, please.
src/main/java/org/apache/hadoop/hbase/zookeeper/HFileArchiveTracker.java
<https://reviews.apache.org/r/4633/#comment14452>
Should this method return a boolean which indicates whether the tracker is
enabled ?
src/main/java/org/apache/hadoop/hbase/zookeeper/HFileArchiveTracker.java
<https://reviews.apache.org/r/4633/#comment14453>
variable table should be included in the log.
src/main/java/org/apache/hadoop/hbase/zookeeper/HFileArchiveTracker.java
<https://reviews.apache.org/r/4633/#comment14454>
Remove first 'the'.
src/main/java/org/apache/hadoop/hbase/zookeeper/HFileArchiveTracker.java
<https://reviews.apache.org/r/4633/#comment14455>
Why do we return when archiveHFileZNode exists ?
- Ted
On 2012-04-04 01:23:29, 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 2012-04-04 01:23:29)
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 21ac4ba
bq. src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java 16e4017
bq. src/main/java/org/apache/hadoop/hbase/ipc/HMasterInterface.java ea7ae45
bq. src/main/java/org/apache/hadoop/hbase/master/CatalogJanitor.java 79d5fdd
bq. src/main/java/org/apache/hadoop/hbase/master/HMaster.java 9bd4ace
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/HFileArchiveManager.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java 1d11f8f
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
4f80999
bq.
src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerServices.java
6884d53
bq. src/main/java/org/apache/hadoop/hbase/regionserver/Store.java 0c7b396
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/ZooKeeperWatcher.java
0f83655
bq. src/main/resources/hbase-default.xml 341431a
bq. src/test/java/org/apache/hadoop/hbase/master/MockRegionServer.java
d2b3060
bq. src/test/java/org/apache/hadoop/hbase/master/TestCatalogJanitor.java
227c5f2
bq.
src/test/java/org/apache/hadoop/hbase/regionserver/TestRegionHFileArchiving.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/util/MockRegionServerServices.java
bb3ddd7
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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