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https://issues.apache.org/jira/browse/HBASE-9321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13753934#comment-13753934
]
Hudson commented on HBASE-9321:
-------------------------------
SUCCESS: Integrated in hbase-0.95 #504 (See
[https://builds.apache.org/job/hbase-0.95/504/])
HBASE-9321 Contention getting the current user in RpcClient.writeRequest
(jxiang: rev 1518699)
*
/hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
*
/hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HConnectionWrapper.java
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/hbase/branches/0.95/hbase-client/src/main/java/org/apache/hadoop/hbase/ipc/RpcClient.java
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/hbase/branches/0.95/hbase-client/src/test/java/org/apache/hadoop/hbase/client/TestClientNoCluster.java
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/hbase/branches/0.95/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/RPCProtos.java
*
/hbase/branches/0.95/hbase-protocol/src/main/java/org/apache/hadoop/hbase/protobuf/generated/WALProtos.java
* /hbase/branches/0.95/hbase-protocol/src/main/protobuf/RPC.proto
*
/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcServer.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/RESTServer.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/RESTServlet.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/RESTServletContainer.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/RowResource.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/RowResultGenerator.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/ScannerResource.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/ScannerResultGenerator.java
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/hbase/branches/0.95/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/SchemaResource.java
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/hbase/branches/0.95/hbase-server/src/test/java/org/apache/hadoop/hbase/rest/HBaseRESTTestingUtility.java
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/hbase/branches/0.95/hbase-server/src/test/java/org/apache/hadoop/hbase/rest/TestRowResource.java
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/hbase/branches/0.95/hbase-server/src/test/java/org/apache/hadoop/hbase/security/access/TestAccessController.java
> Contention getting the current user in RpcClient$Connection.writeRequest
> ------------------------------------------------------------------------
>
> Key: HBASE-9321
> URL: https://issues.apache.org/jira/browse/HBASE-9321
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.95.2
> Reporter: Jean-Daniel Cryans
> Assignee: Jimmy Xiang
> Priority: Critical
> Fix For: 0.98.0, 0.96.0
>
> Attachments: trunk-9321.patch, trunk-9321_v2.patch,
> trunk-9321_v3.patch, trunk-9321_v4.patch
>
>
> I've been running tests on clusters with "lots" of regions, about 400, and
> I'm seeing weird contention in the client.
> This one I see a lot, hundreds and sometimes thousands of threads are blocked
> like this:
> {noformat}
> "htable-pool4-t74" daemon prio=10 tid=0x00007f2254114000 nid=0x2a99 waiting
> for monitor entry [0x00007f21f9e94000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:466)
> - waiting to lock <0x00000000fb5ad000> (a java.lang.Class for
> org.apache.hadoop.security.UserGroupInformation)
> at
> org.apache.hadoop.hbase.ipc.RpcClient$Connection.writeRequest(RpcClient.java:1013)
> at org.apache.hadoop.hbase.ipc.RpcClient.call(RpcClient.java:1407)
> at
> org.apache.hadoop.hbase.ipc.RpcClient.callBlockingMethod(RpcClient.java:1634)
> at
> org.apache.hadoop.hbase.ipc.RpcClient$BlockingRpcChannelImplementation.callBlockingMethod(RpcClient.java:1691)
> at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.multi(ClientProtos.java:27339)
> at
> org.apache.hadoop.hbase.client.MultiServerCallable.call(MultiServerCallable.java:105)
> at
> org.apache.hadoop.hbase.client.MultiServerCallable.call(MultiServerCallable.java:43)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:183)
> {noformat}
> While the holder is doing this:
> {noformat}
> "htable-pool17-t55" daemon prio=10 tid=0x00007f2244408000 nid=0x2a98 runnable
> [0x00007f21f9f95000]
> java.lang.Thread.State: RUNNABLE
> at java.security.AccessController.getStackAccessControlContext(Native
> Method)
> at java.security.AccessController.getContext(AccessController.java:487)
> at
> org.apache.hadoop.security.UserGroupInformation.getCurrentUser(UserGroupInformation.java:466)
> - locked <0x00000000fb5ad000> (a java.lang.Class for
> org.apache.hadoop.security.UserGroupInformation)
> at
> org.apache.hadoop.hbase.ipc.RpcClient$Connection.writeRequest(RpcClient.java:1013)
> at org.apache.hadoop.hbase.ipc.RpcClient.call(RpcClient.java:1407)
> at
> org.apache.hadoop.hbase.ipc.RpcClient.callBlockingMethod(RpcClient.java:1634)
> at
> org.apache.hadoop.hbase.ipc.RpcClient$BlockingRpcChannelImplementation.callBlockingMethod(RpcClient.java:1691)
> at
> org.apache.hadoop.hbase.protobuf.generated.ClientProtos$ClientService$BlockingStub.multi(ClientProtos.java:27339)
> at
> org.apache.hadoop.hbase.client.MultiServerCallable.call(MultiServerCallable.java:105)
> at
> org.apache.hadoop.hbase.client.MultiServerCallable.call(MultiServerCallable.java:43)
> at
> org.apache.hadoop.hbase.client.RpcRetryingCaller.callWithoutRetries(RpcRetryingCaller.java:183)
> {noformat}
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