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https://issues.apache.org/jira/browse/HDDS-1789?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Shashikant Banerjee resolved HDDS-1789.
---------------------------------------
Resolution: Duplicate
> BlockOutputStream#watchForCommit fails with UnsupportedOperationException
> --------------------------------------------------------------------------
>
> Key: HDDS-1789
> URL: https://issues.apache.org/jira/browse/HDDS-1789
> Project: Hadoop Distributed Data Store
> Issue Type: Bug
> Components: Ozone Client
> Affects Versions: 0.5.0
> Reporter: Shashikant Banerjee
> Assignee: Shashikant Banerjee
> Priority: Major
> Fix For: 0.5.0
>
>
> {code:java}
> ```2019-07-12 08:45:17,981 ERROR ozone.MiniOzoneLoadGenerator
> (MiniOzoneLoadGenerator.java:load(105)) - LOADGEN: Create
> key:pool-444-thread-5-1328179725 failed with exception, skipping
> java.lang.UnsupportedOperationException
> at java.util.AbstractList.add(AbstractList.java:148)
> at java.util.AbstractList.add(AbstractList.java:108)
> at java.util.AbstractCollection.addAll(AbstractCollection.java:344)
> at
> org.apache.hadoop.hdds.scm.storage.BlockOutputStream.watchForCommit(BlockOutputStream.java:363)
> at
> org.apache.hadoop.hdds.scm.storage.BlockOutputStream.handleFullBuffer(BlockOutputStream.java:332)
> at
> org.apache.hadoop.hdds.scm.storage.BlockOutputStream.write(BlockOutputStream.java:259)
> at
> org.apache.hadoop.ozone.client.io.BlockOutputStreamEntry.write(BlockOutputStreamEntry.java:129)
> at
> org.apache.hadoop.ozone.client.io.KeyOutputStream.handleWrite(KeyOutputStream.java:211)
> at
> org.apache.hadoop.ozone.client.io.KeyOutputStream.write(KeyOutputStream.java:193)
> at
> org.apache.hadoop.ozone.client.io.OzoneOutputStream.write(OzoneOutputStream.java:49)
> at java.io.OutputStream.write(OutputStream.java:75)
> at
> org.apache.hadoop.ozone.MiniOzoneLoadGenerator.load(MiniOzoneLoadGenerator.java:103)
> at
> org.apache.hadoop.ozone.MiniOzoneLoadGenerator.lambda$startIO$0(MiniOzoneLoadGenerator.java:152)
> at
> java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1626)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)```
> ye ek aur issue hai from Chaos
> please raise a bug
> Shashikant Banerjee [9:56 AM]
> okk
> actually jstacks are taken at 15 min interval
> i am yet to find any common hanging thread among all the 3 jstacks
> Mukul Kumar Singh [10:00 AM]
> 2nd file mein
> ```java.lang.Thread.State: WAITING (parking)
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00007fb5b29ed228> (a
> java.util.concurrent.locks.ReentrantReadWriteLock$NonfairSync)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared(AbstractQueuedSynchronizer.java:967)
> at
> java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(AbstractQueuedSynchronizer.java:1283)
> at
> java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(ReentrantReadWriteLock.java:727)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.readLock(FSNamesystem.java:1595)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.handleHeartbeat(FSNamesystem.java:4894)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.sendHeartbeat(NameNodeRpcServer.java:1438)
> at
> org.apache.hadoop.hdfs.protocolPB.DatanodeProtocolServerSideTranslatorPB.sendHeartbeat(DatanodeProtocolServerSideTranslatorPB.java:118)
> at
> org.apache.hadoop.hdfs.protocol.proto.DatanodeProtocolProtos$DatanodeProtocolService$2.callBlockingMethod(DatanodeProtocolProtos.java:31228)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:640)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:982)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2351)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2347)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:422)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1866)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2347)```
> {code}
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