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https://issues.apache.org/jira/browse/HDFS-3071?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13236403#comment-13236403
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Hudson commented on HDFS-3071:
------------------------------
Integrated in Hadoop-Common-trunk-Commit #1919 (See
[https://builds.apache.org/job/Hadoop-Common-trunk-Commit/1919/])
HDFS-3071. haadmin failover command does not provide enough detail when
target NN is not ready to be active. Contributed by Todd Lipcon. (Revision
1304203)
Result = SUCCESS
todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1304203
Files :
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/FailoverController.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/HAAdmin.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/HAServiceProtocol.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/HAServiceStatus.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/HealthMonitor.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/protocolPB/HAServiceProtocolClientSideTranslatorPB.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ha/protocolPB/HAServiceProtocolServerSideTranslatorPB.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/proto/HAServiceProtocol.proto
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestFailoverController.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestHAAdmin.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ha/TestHealthMonitor.java
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNodeRpcServer.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSHAAdmin.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/tools/TestDFSHAAdminMiniCluster.java
> haadmin failover command does not provide enough detail for when target NN is
> not ready to be active
> ----------------------------------------------------------------------------------------------------
>
> Key: HDFS-3071
> URL: https://issues.apache.org/jira/browse/HDFS-3071
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: ha
> Affects Versions: 0.24.0
> Reporter: Philip Zeyliger
> Assignee: Todd Lipcon
> Fix For: 0.24.0, 0.23.2
>
> Attachments: hdfs-3071.txt, hdfs-3071.txt, hdfs-3071.txt,
> hdfs-3071.txt, hdfs-3071.txt, hdfs-3071.txt
>
>
> When running the failover command, you can get an error message like the
> following:
> {quote}
> $ hdfs --config $(pwd) haadmin -failover namenode2 namenode1
> Failover failed: xxx.yyy/1.2.3.4:8020 is not ready to become active
> {quote}
> Unfortunately, the error message doesn't describe why that node isn't ready
> to be active. In my case, the target namenode's logs don't indicate anything
> either. It turned out that the issue was "Safe mode is ON.Resources are low
> on NN. Safe mode must be turned off manually.", but ideally the user would be
> told that at the time of the failover.
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