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https://issues.apache.org/jira/browse/ACCUMULO-1049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13591380#comment-13591380
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Hudson commented on ACCUMULO-1049:
----------------------------------
Integrated in Accumulo-1.4.x #278 (See
[https://builds.apache.org/job/Accumulo-1.4.x/278/])
merged some bug fixes from 1.5:
ACCUMULO-1125 delete distributed work queue task lock when task fails
ACCUMULO-1049 modified master to stop locking tserver nodes and just monitor
tserver nodes in zookeeper
ACCUMULO-954 made zoolock report when its no longer able to monitor lock node
and there does not know the status of the lock
ACCUMULO-954 Made zoolock rewatch its parent node and added some unit test for
zoolock (Revision 1451708)
Result = SUCCESS
kturner :
Files :
* /accumulo/branches/1.4
* /accumulo/branches/1.4/src
* /accumulo/branches/1.4/src/core
* /accumulo/branches/1.4/src/server
* /accumulo/branches/1.4/src/server/src
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/gc/SimpleGarbageCollector.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/master/LiveTServerSet.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/master/Master.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/master/TServerLockWatcher.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/tabletserver/TabletServer.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/test/functional
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/test/functional/SplitRecoveryTest.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/test/functional/ZombieTServer.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/zookeeper/DistributedWorkQueue.java
*
/accumulo/branches/1.4/src/server/src/main/java/org/apache/accumulo/server/zookeeper/ZooLock.java
> Master does not need to get tserver lock
> ----------------------------------------
>
> Key: ACCUMULO-1049
> URL: https://issues.apache.org/jira/browse/ACCUMULO-1049
> Project: Accumulo
> Issue Type: Improvement
> Components: master
> Affects Versions: 1.4.0
> Reporter: Keith Turner
> Assignee: Keith Turner
> Fix For: 1.5.0, 1.4.3
>
>
> Every tserver has a lock in zookeeper. The master tries to get this lock and
> when it does it assumes the tserver is dead. It seems like this may no
> longer be necessary since changes made in 1.3. The master used to only keep
> track of ip and port to identify a tablet server. It needed to know when it
> got the lock to detect the difference between two tablet server instances at
> the same ip and port.
> Since 1.3 the master keeps distinctive info about a tablet server now and can
> detect the difference between tablet server instances. Making the master
> just monitor the current tablet server locks instead of trying to get the
> lock would simplify the master code.
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