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https://issues.apache.org/jira/browse/HADOOP-14521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Rushabh S Shah updated HADOOP-14521:
------------------------------------
Attachment: HDFS-11804-trunk-8.patch
[~xiaochen]: thanks for the review.
Attaching a patch with more informative log message.
Below is the diff between patch#7 and patch#8 for quick reference.
{noformat}
diff ~/patches/jira/HDFS-11804-trunk-7.patch
~/patches/jira/HDFS-11804-trunk-8.patch
103c103
< @@ -79,24 +87,73 @@ public LoadBalancingKMSClientProvider(KMSClientProvider[]
providers,
---
> @@ -79,24 +87,79 @@ public LoadBalancingKMSClientProvider(KMSClientProvider[]
> providers,
167c167,173
< + + " providers in the group or the exception is not
recoverable.");
---
> + + " providers(depending on {}={} setting and numProviders={})"
> + + " in the group OR the exception is not recoverable",
> +
> CommonConfigurationKeysPublic.KMS_CLIENT_FAILOVER_MAX_RETRIES_KEY
> + , getConf().getInt(
> + CommonConfigurationKeysPublic.
> + KMS_CLIENT_FAILOVER_MAX_RETRIES_KEY, providers.length),
> + providers.length);
{noformat}
> 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: 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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