[jira] [Updated] (HBASE-3710) Book.xml - fill out descriptions of metrics

["Doug Meil (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-3710?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Meil updated HBASE-3710:
-----------------------------

    Attachment: book.xml.patch

> Book.xml - fill out descriptions of metrics
> -------------------------------------------
>
>                 Key: HBASE-3710
>                 URL: https://issues.apache.org/jira/browse/HBASE-3710
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Doug Meil
>            Assignee: Doug Meil
>            Priority: Minor
>         Attachments: book.xml.patch
>
>
> I filled out the skeleton of the metrics in book.xml, but I'd like one of the committers to fill in the rest of the details on what these mean.  Thanks! :-)
> For example..
> -------
> I'm assuming that these are referring to the LRU block cache in memory.  I'd like to docs to state this (for the sake of clarity) and also the units (e.g., MB).
> hbase.regionserver.blockCacheCount
> hbase.regionserver.blockCacheFree
> hbase.regionserver.blockCacheHitRatio
> hbase.regionserver.blockCacheSize
> -------
> This is read latency from HDFS, I assume...
> hbase.regionserver.fsReadLatency_avg_time
> hbase.regionserver.fsReadLatency_num_ops
> hbase.regionserver.fsSyncLatency_avg_time
> hbase.regionserver.fsSyncLatency_num_ops
> hbase.regionserver.fsWriteLatency_avg_time
> hbase.regionserver.fsWriteLatency_num_ops
> ----------------
> point in time utilized (i.e., as opposed to max or trailing) memstore I assume, would be nice to document.
> hbase.regionserver.memstoreSizeMB
> ---------------
> obvious, but might as well document it
> hbase.regionserver.regions
> --------------
> This is any Put, Get, Delete, or Scan operation, I assume?
> hbase.regionserver.requests
> --------------
> detail on these would be nice, especially for tips on if there are any critical numbers/ratios to watch for.
> hbase.regionserver.storeFileIndexSizeMB
> hbase.regionserver.stores

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