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https://issues.apache.org/jira/browse/HDFS-6475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14028087#comment-14028087
]
Hadoop QA commented on HDFS-6475:
---------------------------------
{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12649805/HDFS-6475.003.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 1 new
or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. There were no new javadoc warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with
eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in
hadoop-common-project/hadoop-common hadoop-hdfs-project/hadoop-hdfs.
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-HDFS-Build/7082//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/7082//console
This message is automatically generated.
> WebHdfs clients fail without retry because incorrect handling of
> StandbyException
> ---------------------------------------------------------------------------------
>
> Key: HDFS-6475
> URL: https://issues.apache.org/jira/browse/HDFS-6475
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: ha, webhdfs
> Affects Versions: 2.4.0
> Reporter: Yongjun Zhang
> Assignee: Yongjun Zhang
> Attachments: HDFS-6475.001.patch, HDFS-6475.002.patch,
> HDFS-6475.003.patch, HDFS-6475.003.patch
>
>
> With WebHdfs clients connected to a HA HDFS service, the delegation token is
> previously initialized with the active NN.
> When clients try to issue request, the NN it contacts is stored in a map
> returned by DFSUtil.getNNServiceRpcAddresses(conf). And the client contact
> the NN based on the order, so likely the first one it runs into is StandbyNN.
> If the StandbyNN doesn't have the updated client crediential, it will throw a
> s SecurityException that wraps StandbyException.
> The client is expected to retry another NN, but due to the insufficient
> handling of SecurityException mentioned above, it failed.
> Example message:
> {code}
> {RemoteException={message=Failed to obtain user group information:
> org.apache.hadoop.security.token.SecretManager$InvalidToken:
> StandbyException, javaCl
> assName=java.lang.SecurityException, exception=SecurityException}}
> org.apache.hadoop.ipc.RemoteException(java.lang.SecurityException): Failed to
> obtain user group information:
> org.apache.hadoop.security.token.SecretManager$InvalidToken: StandbyException
> at
> org.apache.hadoop.hdfs.web.JsonUtil.toRemoteException(JsonUtil.java:159)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.validateResponse(WebHdfsFileSystem.java:325)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.access$700(WebHdfsFileSystem.java:107)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.getResponse(WebHdfsFileSystem.java:635)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem$AbstractRunner.run(WebHdfsFileSystem.java:542)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.run(WebHdfsFileSystem.java:431)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getHdfsFileStatus(WebHdfsFileSystem.java:685)
> at
> org.apache.hadoop.hdfs.web.WebHdfsFileSystem.getFileStatus(WebHdfsFileSystem.java:696)
> at kclient1.kclient$1.run(kclient.java:64)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:356)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1528)
> at kclient1.kclient.main(kclient.java:58)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at org.apache.hadoop.util.RunJar.main(RunJar.java:212)
> {code}
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