curator-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jordan Zimmerman <jor...@jordanzimmerman.com>
Subject Re: LeaderSelector throwing exception on mutex.acquire()
Date Sat, 21 Jun 2014 02:16:32 GMT
This error says that start() has not been called on the CuratorFramework instance. You should
call start() immediately after allocating it.

-JZ


From: Corey Nolet cjnolet@gmail.com
Reply: user@curator.apache.org user@curator.apache.org
Date: June 20, 2014 at 9:14:37 PM
To: user user@curator.apache.org
Subject:  LeaderSelector throwing exception on mutex.acquire()  

The exception below is happening quite frequently in my code. It looks like it's because I'm
trying to do operations with a client before it has fully initiated a connection to Zookeeper.
What is the recommended way to wait until the curatorFramework is connected? Apply a connectionListener
and block until a state of CONNECTED is passed into the listener?


Thanks!

2014-06-20 22:10:08,335 [leader.LeaderSelector] ERROR: mutex.acquire() threw an exception

java.lang.IllegalStateException: instance must be started before calling this method

at com.google.common.base.Preconditions.checkState(Preconditions.java:149)

at org.apache.curator.framework.imps.CuratorFrameworkImpl.delete(CuratorFrameworkImpl.java:358)

at org.apache.curator.framework.recipes.locks.LockInternals.deleteOurPath(LockInternals.java:345)

at org.apache.curator.framework.recipes.locks.LockInternals.internalLockLoop(LockInternals.java:335)

at org.apache.curator.framework.recipes.locks.LockInternals.attemptLock(LockInternals.java:225)

at org.apache.curator.framework.recipes.locks.InterProcessMutex.internalLock(InterProcessMutex.java:221)

at org.apache.curator.framework.recipes.locks.InterProcessMutex.acquire(InterProcessMutex.java:77)

at org.apache.curator.framework.recipes.leader.LeaderSelector.doWork(LeaderSelector.java:385)

at org.apache.curator.framework.recipes.leader.LeaderSelector.doWorkLoop(LeaderSelector.java:443)

at org.apache.curator.framework.recipes.leader.LeaderSelector.access$100(LeaderSelector.java:63)

at org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:244)

at org.apache.curator.framework.recipes.leader.LeaderSelector$2.call(LeaderSelector.java:238)

at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)

at java.util.concurrent.FutureTask.run(FutureTask.java:166)

at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)

at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)

at java.util.concurrent.FutureTask.run(FutureTask.java:166)

at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)

at java.lang.Thread.run(Thread.java:724)
Mime
View raw message