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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2012/11/05 02:36:37 UTC
[jira] [Commented] (HBASE-6920) On timeout connecting to master,
client can get stuck and never make progress
[ https://issues.apache.org/jira/browse/HBASE-6920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490395#comment-13490395 ]
Hudson commented on HBASE-6920:
-------------------------------
Integrated in HBase-0.94-security-on-Hadoop-23 #9 (See [https://builds.apache.org/job/HBase-0.94-security-on-Hadoop-23/9/])
HBASE-6920 Addendum2. Remove test code which does not work for the Secure build (Revision 1395093)
HBASE-6920 Addendum - fix SecureRpcEngine (Revision 1394908)
HBASE-6920 On timeout connecting to master, client can get stuck and never make progress (Revision 1394857)
Result = FAILURE
larsh :
Files :
* /hbase/branches/0.94/security/src/main/java/org/apache/hadoop/hbase/ipc/SecureRpcEngine.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/ipc/HBaseRPC.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/ipc/RpcEngine.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/ipc/WritableRpcEngine.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/client/TestClientTimeouts.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/ipc/RandomTimeoutRpcEngine.java
larsh :
Files :
* /hbase/branches/0.94/security/src/main/java/org/apache/hadoop/hbase/ipc/SecureRpcEngine.java
gchanan :
Files :
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/ipc/HBaseRPC.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/ipc/RpcEngine.java
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/ipc/WritableRpcEngine.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/client/TestClientTimeouts.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/ipc/RandomTimeoutRpcEngine.java
> On timeout connecting to master, client can get stuck and never make progress
> -----------------------------------------------------------------------------
>
> Key: HBASE-6920
> URL: https://issues.apache.org/jira/browse/HBASE-6920
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.94.2
> Reporter: Gregory Chanan
> Assignee: Gregory Chanan
> Priority: Critical
> Fix For: 0.94.2
>
> Attachments: 6920-addendum.txt, HBASE-6920.patch, HBASE-6920-v2.patch
>
>
> HBASE-5058 appears to have introduced an issue where a timeout in HConnection.getMaster() can cause the client to never be able to connect to the master. So, for example, an HBaseAdmin object can never successfully be initialized.
> The issue is here:
> {code}
> if (tryMaster.isMasterRunning()) {
> this.master = tryMaster;
> this.masterLock.notifyAll();
> break;
> }
> {code}
> If isMasterRunning times out, it throws an UndeclaredThrowableException, which is already not ideal, because it can be returned to the application.
> But if the first call to getMaster succeeds, it will set masterChecked = true, which makes us never try to reconnect; that is, we will set this.master = null and just throw MasterNotRunningExceptions, without even trying to connect.
> I tried out a 94 client (actually a 92 client with some 94 patches) on a cluster with some network issues, and it would constantly get stuck as described above.
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