[ https://issues.apache.org/jira/browse/HBASE-12951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14301003#comment-14301003 ]
Jurriaan Mous commented on HBASE-12951: --------------------------------------- Patch looks good to me! > TestHCM.testConnectionClose is flakey when using AsyncRpcClient as client > implementation > ---------------------------------------------------------------------------------------- > > Key: HBASE-12951 > URL: https://issues.apache.org/jira/browse/HBASE-12951 > Project: HBase > Issue Type: Bug > Components: IPC/RPC > Affects Versions: 2.0.0, 1.1.0 > Reporter: zhangduo > Assignee: zhangduo > Attachments: HBASE-12951.patch > > > Sometimes the background thread is stuck in table.get, here is the jstack > result. > "testConnectionCloseThread" prio=10 tid=0x00007fdb296f9800 nid=0x6b5c in > Object.wait() [0x00007fdad1bf9000] > java.lang.Thread.State: WAITING (on object monitor) > at java.lang.Object.wait(Native Method) > - waiting on <0x00000000f192d6e0> (a > org.apache.hadoop.hbase.ipc.AsyncCall) > at java.lang.Object.wait(Object.java:503) > at > io.netty.util.concurrent.DefaultPromise.await(DefaultPromise.java:254) > - locked <0x00000000f192d6e0> (a > org.apache.hadoop.hbase.ipc.AsyncCall) > at > io.netty.util.concurrent.DefaultPromise.await(DefaultPromise.java:32) > at io.netty.util.concurrent.AbstractFuture.get(AbstractFuture.java:31) > at > org.apache.hadoop.hbase.ipc.AsyncRpcClient.call(AsyncRpcClient.java:181) > at > org.apache.hadoop.hbase.ipc.AbstractRpcClient.callBlockingMethod(AbstractRpcClient.java:213) > at > org.apache.hadoop.hbase.ipc.AbstractRpcClient$BlockingRpcChannelImplementation.callBlockingMethod(AbstractRpcClient.java:287) > at > org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.get(ClientProtos.java:31727) > at org.apache.hadoop.hbase.client.HTable$4.call(HTable.java:848) > at org.apache.hadoop.hbase.client.HTable$4.call(HTable.java:1) > at > org.apache.hadoop.hbase.client.RpcRetryingCallerImpl.callWithRetries(RpcRetryingCallerImpl.java:120) > at org.apache.hadoop.hbase.client.HTable.get(HTable.java:856) > at org.apache.hadoop.hbase.client.TestHCM$3.run(TestHCM.java:371) -- This message was sent by Atlassian JIRA (v6.3.4#6332)