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https://issues.apache.org/jira/browse/HBASE-3446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13118951#comment-13118951
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[email protected] commented on HBASE-3446:
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src/main/java/org/apache/hadoop/hbase/catalog/MetaMigrationRemovingHTD.java
<https://reviews.apache.org/r/2065/#comment5213>
This visitor can be merged with the visitor in
updateMetaWithNewRegionInfo() after refactoring.
The only difference between them is the boolean parameter to updateHRI().
src/main/java/org/apache/hadoop/hbase/catalog/MetaMigrationRemovingHTD.java
<https://reviews.apache.org/r/2065/#comment5214>
The checking here seems fragile.
I know it is in current code base. So maybe extract the String in another
JIRA.
- Ted
On 2011-10-02 00:01:07, Michael Stack wrote:
bq.
bq. -----------------------------------------------------------
bq. This is an automatically generated e-mail. To reply, visit:
bq. https://reviews.apache.org/r/2065/
bq. -----------------------------------------------------------
bq.
bq. (Updated 2011-10-02 00:01:07)
bq.
bq.
bq. Review request for hbase and Jonathan Gray.
bq.
bq.
bq. Summary
bq. -------
bq.
bq. Make the Meta* operations against meta retry. We do it by using HTable
instances.
bq. (HTable calls HConnection.getRegionServerWithRetries for get, put, scan
etc).
bq. In 0.89, we had special RetryableMetaOperation class that was a
bq. subclass of Callable which reproduced the guts of
HConnection.getRegionServerWithRetries
bq. with its retry loop. Now we just use HTable instead (Costs some on setup
but
bq. otherwise, we avoid duplicating code). Upped the retries on serverside
too.
bq.
bq. Had problem with CatalogJanitor. MetaReader and MetaEditor were relying
bq. heavily on CT methods getting proxy connections to meta and root servers.
bq. CT needs to be cut back. This patch closes down access on (unused) public
bq. methods and removes being able to get an HRegionInterface on meta and root
bq. -- this stuff is used internally to CT only now; use MetaEditor or
bq. MetaReader if you want to update or read catalog tables. Opening new issue
bq. to cutback CT use over the code base.
bq.
bq. A little off topic but couldn't help it since was in MetaReader and
MetaEditor
bq. trying to clean them up, I ended up moving meta migration code out to its
bq. own class rather than have it in all inside in MetaEditor.
bq.
bq. Here is some detail to help reviews.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/catalog/CatalogTracker.java
bq. Clean up. Shutdown access on some of these unused methods. Don't
bq. let out HRegionInterface instances in particular since we are going
bq. away from raw HRI use to instead use a connection with retries:
bq. i.e. HTable.
bq.
bq. Comments on state of this class. Javadoc edits.
bq. getZooKeeperWatcher on HConnection is deprecated so don't use it
bq. in constructor. Override MetaNodeTracker and on node delete
bq. reset meta location (We used to do this over in MetaNodeTracker
bq. but to do that we had to have a CatalogTracker over in zk package
bq. which is silly -- bad package encapsulation).
bq.
bq. (waitForRootServer) Renamed getRootServerConnection and change it
bq. from public to package private.
bq. (waitForRootServerConnectionDefault, getRootServerConnection) Removed.
bq. (getMetaServerConnection) Change from public to package private.
bq. Use MetaReader to read the meta location in root rather than a
bq. raw HRegionInterface so we get retrying.
bq. (remaining, timedout) Added utility methods.
bq. (waitForMetaServer) Changed from public to private.
bq. (resetMetaLocation) Made it synchronized on metaAvailable.
bq. Not all accesses were synchronized.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/catalog/MetaEditor.java
bq. Refactor to use HTable instead of raw HRegionInterface so we get
bq. retrying. For each operation we get an HTable, use it, then close it.
bq. (putToMetaTable, putsToMetaTable, etc) Utility methods.
bq. (updateRootWithMetaMigrationStatus, etc.) Moved out to own
bq. class since these classes are for a one-time migration only.
bq.
bq. A
src/main/java/org/apache/hadoop/hbase/catalog/MetaMigrationRemovingHTD.java
bq. New class that holds all Meta* methods updating meta table used
bq. doing the one-time migration done to meta on startup. This class
bq. is marked deprecated because its going to be dropped in 0.94.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/catalog/MetaReader.java
bq. Retrofit methods in here to use fullScan methods with Visitor.
bq. (getCatalogRegionInterface, getCatalogRegionNameForTable,
bq. getCatalogRegionNameForRegion) Removed.
bq. (fullScan) Cleaned up the fullScans. Fixed up wrong javadoc.
bq. (fullScanOfResults) Renamed as fullScan override.
bq. (fullScanOfRoot) Added as deprecated. We should be doing
bq. this against zk.
bq. (metaRowToRegionPair, getServerNameFromResult) Moved to Result
bq. (CollectAllVisitor) Added
bq. M src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java
bq. Handle few cases where methods throw InterruptedException
bq. (Don't let it out on the HBaseAdmin public API)
bq.
bq. M src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
bq. Populate new exception,
RetriesExhaustedException.ThrowableWithExtraContext
bq. on failure. Call ServerCallable connect AFTER beforeCall rather than
bq. ServerCallable.instantiateServer BEFORE beforeCall.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/client/MetaScanner.java
bq. Add to DEBUG message the connection name we were using.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/client/Result.java
bq. (getServerNameFromCatalogResult, parseCatalogResult,
bq. parseHRegionInfoFromCatalogResult) Added
bq.
bq. M
src/main/java/org/apache/hadoop/hbase/client/RetriesExhaustedException.java
bq. Added new ThrowableWithExtraContext that takes extra context info.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/client/ScannerCallable.java
bq. instantiateServer renamed as connect
bq.
bq. M src/main/java/org/apache/hadoop/hbase/client/ServerCallable.java
bq. Javadoc. Renamed instantiateServer as connect.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/master/HMaster.java
bq. Javadoc. Use MetaReader method instead of handcoding.
bq.
bq. M
src/main/java/org/apache/hadoop/hbase/master/handler/EnableTableHandler.java
bq. Handle InterruptedException
bq.
bq. M
src/main/java/org/apache/hadoop/hbase/master/handler/TableEventHandler.java
bq. Handle InterruptedException
bq.
bq. M src/main/java/org/apache/hadoop/hbase/thrift/ThriftServer.java
bq. Allow hris can come back null when we ask for table regions.
bq.
bq. M src/main/java/org/apache/hadoop/hbase/zookeeper/MetaNodeTracker.java
bq. Remove import of CatalogTracker.
bq.
bq. M src/test/java/org/apache/hadoop/hbase/TestRegionRebalancing.java
bq. Use utility in MetaReader instead of handcode it.
bq.
bq. M src/test/java/org/apache/hadoop/hbase/catalog/TestCatalogTracker.java
bq. Use new HConnectionTestingUtility mocking tests (need to use it
bq. because its a bit harder mocking tests now that we use HTable instead
bq. of the more direct HRegionInterface).
bq. Add some tests of broken out utility methods.
bq.
bq. M src/test/java/org/apache/hadoop/hbase/catalog/TestMetaReaderEditor.java
bq. Add tests
bq.
bq. M
src/test/java/org/apache/hadoop/hbase/catalog/TestMetaReaderEditorNoCluster.java
bq. Add test of 3669 retrying.
bq.
bq. M
src/test/java/org/apache/hadoop/hbase/client/HConnectionTestingUtility.java
bq. New test utility that helps with mock of HConnection making it so can
mock
bq. an HConnection and then have an HTable use the mocked connection. Can do
bq. a mock or a spied on HConnection
bq.
bq. M src/test/java/org/apache/hadoop/hbase/client/TestMetaMigration.java
bq. The migration code moved. Reference new location.
bq.
bq. M src/test/java/org/apache/hadoop/hbase/master/TestCatalogJanitor.java
bq. M
src/test/java/org/apache/hadoop/hbase/master/TestDistributedLogSplitting.java
bq. M src/test/java/org/apache/hadoop/hbase/master/TestMaster.java
bq. Was waiting on wrong events. Was waiting on Opens rather than Splits.
Fix.
bq.
bq.
bq. This addresses bug hbase-3446.
bq. https://issues.apache.org/jira/browse/hbase-3446
bq.
bq.
bq. Diffs
bq. -----
bq.
bq. src/main/java/org/apache/hadoop/hbase/KeyValue.java aa34006
bq. src/main/java/org/apache/hadoop/hbase/LocalHBaseCluster.java 54b4939
bq. src/main/java/org/apache/hadoop/hbase/catalog/CatalogTracker.java
3570e6a
bq. src/main/java/org/apache/hadoop/hbase/catalog/MetaEditor.java ac60311
bq.
src/main/java/org/apache/hadoop/hbase/catalog/MetaMigrationRemovingHTD.java
PRE-CREATION
bq. src/main/java/org/apache/hadoop/hbase/catalog/MetaReader.java 2afe70c
bq. src/main/java/org/apache/hadoop/hbase/client/HBaseAdmin.java a55a4b1
bq. src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
5afaedf
bq. src/main/java/org/apache/hadoop/hbase/client/HTable.java cf55329
bq. src/main/java/org/apache/hadoop/hbase/client/MetaScanner.java c809945
bq. src/main/java/org/apache/hadoop/hbase/client/Result.java 8a0c1a9
bq.
src/main/java/org/apache/hadoop/hbase/client/RetriesExhaustedException.java
89d2abe
bq. src/main/java/org/apache/hadoop/hbase/client/ScannerCallable.java
417ec6c
bq. src/main/java/org/apache/hadoop/hbase/client/ServerCallable.java 816f8b7
bq. src/main/java/org/apache/hadoop/hbase/ipc/HMasterInterface.java a069400
bq. src/main/java/org/apache/hadoop/hbase/master/AssignmentManager.java
65f5e84
bq. src/main/java/org/apache/hadoop/hbase/master/HMaster.java f80d232
bq.
src/main/java/org/apache/hadoop/hbase/master/handler/EnableTableHandler.java
1e5d83c
bq.
src/main/java/org/apache/hadoop/hbase/master/handler/ServerShutdownHandler.java
e70bd83
bq. src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
96b763b
bq. src/main/java/org/apache/hadoop/hbase/thrift/ThriftServer.java 7f21c9f
bq. src/main/java/org/apache/hadoop/hbase/util/HBaseFsck.java 154ac32
bq. src/main/java/org/apache/hadoop/hbase/zookeeper/MetaNodeTracker.java
55257b3
bq. src/test/java/org/apache/hadoop/hbase/TestRegionRebalancing.java fc05615
bq. src/test/java/org/apache/hadoop/hbase/catalog/TestCatalogTracker.java
538e809
bq. src/test/java/org/apache/hadoop/hbase/catalog/TestMetaReaderEditor.java
84130e2
bq.
src/test/java/org/apache/hadoop/hbase/catalog/TestMetaReaderEditorNoCluster.java
PRE-CREATION
bq.
src/test/java/org/apache/hadoop/hbase/client/HConnectionTestingUtility.java
PRE-CREATION
bq. src/test/java/org/apache/hadoop/hbase/client/TestHCM.java f09944e
bq. src/test/java/org/apache/hadoop/hbase/client/TestMetaMigration.java
645bca6
bq. src/test/java/org/apache/hadoop/hbase/master/TestCatalogJanitor.java
8fcdccc
bq.
src/test/java/org/apache/hadoop/hbase/master/TestDistributedLogSplitting.java
a0e6450
bq. src/test/java/org/apache/hadoop/hbase/master/TestMaster.java f473c80
bq.
bq. Diff: https://reviews.apache.org/r/2065/diff
bq.
bq.
bq. Testing
bq. -------
bq.
bq. All tests passed recently. Rerunning again.
bq.
bq.
bq. Thanks,
bq.
bq. Michael
bq.
bq.
> ProcessServerShutdown fails if META moves, orphaning lots of regions
> --------------------------------------------------------------------
>
> Key: HBASE-3446
> URL: https://issues.apache.org/jira/browse/HBASE-3446
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.90.0
> Reporter: Todd Lipcon
> Assignee: stack
> Priority: Blocker
> Fix For: 0.92.0
>
> Attachments: 3446-v11.txt, 3446-v12.txt, 3446-v13.txt, 3446-v14.txt,
> 3446-v2.txt, 3446-v3.txt, 3446-v4.txt, 3446-v7.txt, 3446-v9.txt, 3446.txt,
> 3446v15.txt
>
>
> I ran a rolling restart on a 5 node cluster with lots of regions, and
> afterwards had LOTS of regions left orphaned. The issue appears to be that
> ProcessServerShutdown failed because the server hosting META was restarted
> around the same time as another server was being processed
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