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From "Akira Ajisaka (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-13544) Improve logging for JournalNode in federated cluster
Date Mon, 29 Oct 2018 09:53:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-13544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Akira Ajisaka updated HDFS-13544:
---------------------------------
    Fix Version/s:     (was: 2.9.2)
                   2.10.0

Updated the fix versions since the patch is not committed to branch-2.9.

> Improve logging for JournalNode in federated cluster
> ----------------------------------------------------
>
>                 Key: HDFS-13544
>                 URL: https://issues.apache.org/jira/browse/HDFS-13544
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: federation, hdfs
>            Reporter: Hanisha Koneru
>            Assignee: Hanisha Koneru
>            Priority: Major
>             Fix For: 2.10.0, 3.2.0, 3.1.1, 3.0.3
>
>         Attachments: HDFS-13544.001.patch
>
>
> In a federated cluster,when two namespaces utilize the same JournalSet, it is difficult
to decode some of the log statements as to which Namespace it is logging for. 
> For example, the following two log statements do not tell us which Namespace the edit
log belongs to.
> {code:java}
> INFO  server.Journal (Journal.java:prepareRecovery(773)) - Prepared recovery for segment
1: segmentState { startTxId: 1 endTxId: 10 isInProgress: true } lastWriterEpoch: 1 lastCommittedTxId:
10
> INFO  server.Journal (Journal.java:acceptRecovery(826)) - Synchronizing log startTxId:
1 endTxId: 11 isInProgress: true: old segment startTxId: 1 endTxId: 10 isInProgress: true
is not the right length{code}
> We should add the NameserviceID or the JournalID to appropriate JournalNode logs to
help with debugging.
>  



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