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https://issues.apache.org/jira/browse/HADOOP-14521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16082253#comment-16082253
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Rushabh S Shah commented on HADOOP-14521:
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{noformat}
Running org.apache.hadoop.security.TestKDiag
Tests run: 13, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 2.084 sec - in
org.apache.hadoop.security.TestKDiag
Running org.apache.hadoop.hdfs.server.blockmanagement.TestRBWBlockInvalidation
Tests run: 2, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 19.922 sec - in
org.apache.hadoop.hdfs.server.blockmanagement.TestRBWBlockInvalidation
Running org.apache.hadoop.hdfs.server.namenode.ha.TestFailureToReadEdits
Tests run: 6, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 81.238 sec - in
org.apache.hadoop.hdfs.server.namenode.ha.TestFailureToReadEdits
{noformat}
The failed tests are not related to this patch. Passing locally.
{{Findbugs}} warnings are not related to this patch also.
[~xiaochen]: Mind giving a final pass ?
> KMS client needs retry logic
> ----------------------------
>
> Key: HADOOP-14521
> URL: https://issues.apache.org/jira/browse/HADOOP-14521
> Project: Hadoop Common
> Issue Type: Improvement
> Affects Versions: 2.6.0
> Reporter: Rushabh S Shah
> Assignee: Rushabh S Shah
> Attachments: HADOOP-14521.09.patch, HADOOP-14521-trunk-10.patch,
> HDFS-11804-branch-2.8.patch, HDFS-11804-trunk-1.patch,
> HDFS-11804-trunk-2.patch, HDFS-11804-trunk-3.patch, HDFS-11804-trunk-4.patch,
> HDFS-11804-trunk-5.patch, HDFS-11804-trunk-6.patch, HDFS-11804-trunk-7.patch,
> HDFS-11804-trunk-8.patch, HDFS-11804-trunk.patch
>
>
> The kms client appears to have no retry logic – at all. It's completely
> decoupled from the ipc retry logic. This has major impacts if the KMS is
> unreachable for any reason, including but not limited to network connection
> issues, timeouts, the +restart during an upgrade+.
> This has some major ramifications:
> # Jobs may fail to submit, although oozie resubmit logic should mask it
> # Non-oozie launchers may experience higher rates if they do not already have
> retry logic.
> # Tasks reading EZ files will fail, probably be masked by framework reattempts
> # EZ file creation fails after creating a 0-length file – client receives
> EDEK in the create response, then fails when decrypting the EDEK
> # Bulk hadoop fs copies, and maybe distcp, will prematurely fail
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