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https://issues.apache.org/jira/browse/HBASE-17391?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sreeram Venkatasubramanian updated HBASE-17391:
-----------------------------------------------
Attachment: HBASE-17391.master.003.patch
> [Shell] Add shell command to get list of servers, with filters
> --------------------------------------------------------------
>
> Key: HBASE-17391
> URL: https://issues.apache.org/jira/browse/HBASE-17391
> Project: HBase
> Issue Type: Improvement
> Components: shell
> Affects Versions: 1.3.0
> Reporter: Lars George
> Assignee: Sreeram Venkatasubramanian
> Priority: Major
> Labels: beginner
> Fix For: 3.0.0
>
> Attachments: HBASE-17391.master.000.patch,
> HBASE-17391.master.001.patch, HBASE-17391.master.002.patch,
> HBASE-17391.master.003.patch
>
>
> For some operations, for example calling {{update_config}}, the user needs to
> specify the full server name. For region servers that is easier to find, but
> not so much for the master (using {{zk_dump}} works but is noisy). It woould
> be good to add a utility call that lists the servers, preferably with an
> optional filter (a regexp, server type, or globbing style format) that allows
> to whittle down the potentially long is of servers. For example:
> {noformat}
> hbase(main):001:0> list_servers "master"
> master-1.internal.larsgeorge.com,16000,1483018890074
> hbase(main):002:0> list_servers "rs"
> slave-1.internal.larsgeorge.com,16020,1482996572051
> slave-3.internal.larsgeorge.com,16020,1482996572481
> slave-2.internal.larsgeorge.com,16020,1482996570909
> hbase(main):003:0> list_servers "rs:s.*\.com.*"
> slave-1.internal.larsgeorge.com,16020,1482996572051
> slave-3.internal.larsgeorge.com,16020,1482996572481
> slave-2.internal.larsgeorge.com,16020,1482996570909
> hbase(main):004:0> list_servers ":.*160?0.*"
> master-1.internal.larsgeorge.com,16000,1483018890074
> slave-1.internal.larsgeorge.com,16020,1482996572051
> slave-3.internal.larsgeorge.com,16020,1482996572481
> slave-2.internal.larsgeorge.com,16020,1482996570909
> {noformat}
> I could imagine to have {{master}}, {{backup-master}}, {{rs}}, and maybe even
> {{zk}} too. The optional regexp shown uses a colon as a divider. This
> combines the "by-type", and using a filter. Example #4 skips the type and
> only is using the filter.
> Of course, you could also implement this differently, say with two
> parameters... just suggesting.
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