[jira] Commented: (HADOOP-1384) HBase code update 0.0.0-4

["Hadoop QA (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-1384?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12496690 ] 

Hadoop QA commented on HADOOP-1384:
-----------------------------------

+1

http://issues.apache.org/jira/secure/attachment/12357579/patch.txt applied and successfully tested against trunk revision r539093.

Test results:   http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/153/testReport/
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/153/console

> HBase code update 0.0.0-4
> -------------------------
>
>                 Key: HADOOP-1384
>                 URL: https://issues.apache.org/jira/browse/HADOOP-1384
>             Project: Hadoop
>          Issue Type: Improvement
>          Components: contrib/hbase
>            Reporter: Jim Kellerman
>         Assigned To: Jim Kellerman
>         Attachments: patch.txt
>
>
> HClient
> - Added logic to detect when a region is no longer being served by the
>   cached region server
> - Prevent null pointer exception in the get methods because the server
>   can return null if the data is not found (contributed by Vuk Ercegovac)
> - Disallow creation of reserved table names
> HLocking
> - Make the lock counter an AtomicInteger
> HLog
> - Add some DEBUG logging
> HMaster
> - Main processing loop did not sleep if there were no known region
>   servers (contributed by Vuk Ercegovac)
> - Move processing of kill list after processing all the incoming
>   region server messages 
> - deleteTable prevents meta scanner from running so that there will be
>   no race condition between them. Previously, if deleteTable was in
>   the middle of processing and the meta scanner ran, it could detect a
>   region as unassigned and try to reassign it.
> - deleteTable does not update the kill list until it has finished
>   scanning a meta region. This will prevent lock contention on the
>   region server.
> - deleteTable will now delete any regions that are not being served
> - deleteTable removes unassigned regions from the "to be assigned list"
> - fix createTable so it correctly refuses to create a second table
>   with the same name as an existing table
> HRegion
> - deleteRegion is a new static method
> - added isClosed method
> - closeAndDelete calls new deleteRegion method
> - added locking
> HRegionInterface
> - getRegionInfo now throws NotServingRegionException
> HRegionServer
> - split or compact checker skips a region if it is closed
> - cache flusher skips a region if it is closed
> - lessen amount of time closeAndDeleteRegion holds the HRegionServer
>   write lock
> - getRegionInfo now throws NotServingRegionException
> - moved checks for region being served to getRegion method (which
>   throws NotServingRegionException)
> - fixed bug in close in which the scanner was not actually getting closed
> - implements RegionUnavailableListener in splitOrCompactChecker
> Leases
> - added some DEBUG logging
> - fixed bug in which the leaseCheckFrequency was not being set causing
>   the lease checker to spin and never sleep. (contributed by Vuk Ercegovac)
> NotServingRegionException
> - new exception (extends IOException)
> RegionUnavailableListener
> - new interface that enables split region to call back the caller just
>   before the old region is taken off-line
> Refactor test cases:
> - MiniHBaseCluster modified
> - Deleted Environment.java replaced with StaticTestEnvironment.java
> - New classes:
>   HBaseTestCase
>   HBaseClusterTestCase
> - New tests:
>   TestHLog
>   TestTable
> - Modified tests:
>   TestGet
>   TestHBaseCluster
>   TestHRegion
>   TestScanner

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