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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-1741) [stargate] performance tuning
Date Thu, 08 Apr 2010 19:11:36 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1741?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell resolved HBASE-1741.
-----------------------------------

       Resolution: Fixed
    Fix Version/s:     (was: 0.21.0)

With the exception of the hot cell cache, the above has been accomplished. 

bq. Profile and tune the servlet.

I ported PE to httpclient and profiled both client and server side with jprofiler. There were
no glaring hot spots or apparent performance problems suitable for opening jiras for. Bulk
of time is spent in I/O to client or HBase cluster, as it should be. Overheads of Jetty and
Jersey are out of scope, but was a few % for each typically.

bq. Profile and tune the Client package. Insure that it is using Commons HttpClient in a manner
that could achieve good performance.

To the extent httpclient 3.1 is tunable, that has been done. 

> [stargate] performance tuning
> -----------------------------
>
>                 Key: HBASE-1741
>                 URL: https://issues.apache.org/jira/browse/HBASE-1741
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>
> Improve Stargate performance.
> Profile and tune the servlet.
> Profile and tune the Client package. Insure that it is using Commons HttpClient in a
manner that could achieve good performance.
> Consider a hot cell and/or query cache backed by an LruHashMap. 

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