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From "Wei Deng (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (CASSANDRA-12388) For LeveledCompactionStrategy, provide a JMX interface to trigger printing out LeveledManifest
Date Fri, 05 Aug 2016 08:31:20 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-12388?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Wei Deng updated CASSANDRA-12388:
---------------------------------
    Description: For LCS, it appears that we have a private toString() method in LeveledManifest,
but it's only used from within the class, even though it has capability of printing all SSTables
on all levels. We used to be able to get this information from the manifest file in data directory,
but after CASSANDRA-4872 this is no longer available. It will be useful for troubleshooting
if we can have a JMX MBean method to trigger printing out the full generations list of a particular
manifest instance.  (was: It appears that we have a private toString() method in LeveledManifest,
but it's only used from within the class, even though it has capability of printing all SSTables
on all levels. We used to be able to get this information from the manifest file in data directory,
but after CASSANDRA-4872 this is no longer available. It will be useful for troubleshooting
if we can have a JMX MBean method to trigger printing out the full generations list of a particular
manifest instance.)

> For LeveledCompactionStrategy, provide a JMX interface to trigger printing out LeveledManifest
> ----------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-12388
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-12388
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Compaction
>            Reporter: Wei Deng
>            Priority: Minor
>              Labels: lcs
>
> For LCS, it appears that we have a private toString() method in LeveledManifest, but
it's only used from within the class, even though it has capability of printing all SSTables
on all levels. We used to be able to get this information from the manifest file in data directory,
but after CASSANDRA-4872 this is no longer available. It will be useful for troubleshooting
if we can have a JMX MBean method to trigger printing out the full generations list of a particular
manifest instance.



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