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From "Matteo Bertozzi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16450) Shell tool to dump replication queues
Date Tue, 23 Aug 2016 01:09:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16450?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15431909#comment-15431909

Matteo Bertozzi commented on HBASE-16450:

looks good to me. below a list of "cleanups". but nothing important. 
(up to you if put those as improvement for another jira)

I don't see the new ZKUtil.getReplicationZnodesDump(), is this a left over from the initial
patch or is there a missing file calling this method?

why the --hdfs and --distributed parseOpts() uses startsWith() and not equals()?

that parseOpts() with the queue is interesting. in general we do a simple for loop, but the
while looks nice. it is unfortunate the double conversion list->linkedList in the run()
but not important here. (not sure if we want to keep the standard for loop, but I like the
form here with the poll()). There is also AbstractHBaseTool that Appy just moved to common
that have a different way to handle args, but at the moment any tool is different. so.. keep
it as it is for now. we may bulk change every tool when we will decide something.

why dumpReplicationQueues() uses LOG.info() instead of System.out? I think in other tools
we use System.out

In getTotalWALSize() you can try to use new WALLink(getConf(), serverName, wal).getFileStatus()
which resolve the logdir and oldLogDir for you

> Shell tool to dump replication queues 
> --------------------------------------
>                 Key: HBASE-16450
>                 URL: https://issues.apache.org/jira/browse/HBASE-16450
>             Project: HBase
>          Issue Type: Improvement
>          Components: Operability, Replication
>    Affects Versions: 2.0.0, 1.3.0, 1.1.5, 1.2.2
>            Reporter: Esteban Gutierrez
>            Assignee: Esteban Gutierrez
>         Attachments: HBASE-16450.branch-1.001.patch, HBASE-16450.master.001.patch, HBASE-16450.master.002.patch
> Currently there is no way to dump list of the configured queues and the replication queues
when replication is enabled. Unfortunately the HBase master only offers an option to dump
the whole content of the znodes but not details on the queues being processed on each RS.

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