> On Jan. 26, 2015, 5:32 p.m., Hongchao Deng wrote: > > ./src/java/main/org/apache/zookeeper/server/PrepRequestProcessor.java, line > > 159 > > <https://reviews.apache.org/r/20071/diff/3/?file=834241#file834241line159> > > > > Is there any race in listener between run() and shutdown()? Maybe some > > comments? > > Rakesh R wrote: > yes. I missed that part. How about making listener as 'volatile' ? > > Hongchao Deng wrote: > It's a problem called time-to-check-time-to-use. > > Rakesh R wrote: > Then will move the notification inside exception-handling block of each > thread. I'm just trying to avoid extra synchronized block. agree?
Adding one more point to the above. My intention to make listener=null is, the listener should not be invoked when the thread stops execution gracefully(through #shutdown call). - Rakesh ----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/20071/#review69622 ----------------------------------------------------------- On Jan. 26, 2015, 2:12 p.m., Rakesh R wrote: > > ----------------------------------------------------------- > This is an automatically generated e-mail. To reply, visit: > https://reviews.apache.org/r/20071/ > ----------------------------------------------------------- > > (Updated Jan. 26, 2015, 2:12 p.m.) > > > Review request for zookeeper, michim, Raul Gutierrez Segales, and Camille > Fournier. > > > Bugs: ZOOKEEPER-1907 > https://issues.apache.org/jira/browse/ZOOKEEPER-1907 > > > Repository: zookeeper > > > Description > ------- > > Improve the thread handling mechanism by detecting if any of the critical > thread dies. > Here the idea is to periodically checking the status of all the critical > threads in ZK server using DeathWatcherThread. > > > Diffs > ----- > > ./src/java/main/org/apache/zookeeper/server/ExitCode.java PRE-CREATION > ./src/java/main/org/apache/zookeeper/server/PrepRequestProcessor.java > 1654804 > ./src/java/main/org/apache/zookeeper/server/SessionTrackerImpl.java 1654804 > ./src/java/main/org/apache/zookeeper/server/SyncRequestProcessor.java > 1654804 > ./src/java/main/org/apache/zookeeper/server/ZooKeeperServer.java 1654804 > ./src/java/main/org/apache/zookeeper/server/ZooKeeperServerListener.java > PRE-CREATION > ./src/java/main/org/apache/zookeeper/server/quorum/CommitProcessor.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/FollowerRequestProcessor.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/FollowerZooKeeperServer.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/LeaderSessionTracker.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/LeaderZooKeeperServer.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/LearnerSessionTracker.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/LearnerZooKeeperServer.java > 1654804 > ./src/java/main/org/apache/zookeeper/server/quorum/LocalSessionTracker.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/ObserverRequestProcessor.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/ObserverZooKeeperServer.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/ProposalRequestProcessor.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/ReadOnlyRequestProcessor.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/ReadOnlyZooKeeperServer.java > 1654804 > > ./src/java/main/org/apache/zookeeper/server/quorum/UpgradeableSessionTracker.java > 1654804 > ./src/java/test/org/apache/zookeeper/server/PrepRequestProcessorTest.java > 1654804 > ./src/java/test/org/apache/zookeeper/server/SessionTrackerTest.java 1654804 > > ./src/java/test/org/apache/zookeeper/server/quorum/CommitProcessorConcurrencyTest.java > 1654804 > ./src/java/test/org/apache/zookeeper/server/quorum/CommitProcessorTest.java > 1654804 > ./src/java/test/org/apache/zookeeper/test/ClientBase.java 1654804 > ./src/java/test/org/apache/zookeeper/test/SessionTrackerCheckTest.java > 1654804 > > Diff: https://reviews.apache.org/r/20071/diff/ > > > Testing > ------- > > yet to be inlcuded > > > Thanks, > > Rakesh R > >
