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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-10572) Create an IntegrationTest for region replicas
Date Fri, 07 Mar 2014 20:36:42 GMT

     [ https://issues.apache.org/jira/browse/HBASE-10572?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Enis Soztutar updated HBASE-10572:
----------------------------------

    Attachment: hbase-10572_v1.patch

Here is a more complete patch. From the javadoc: 

{code}
* An IntegrationTest for doing reads with a timeout, to a read-only table with region
 * replicas. ChaosMonkey is run which kills the region servers and master, but ensures
 * that meta region server is not killed, and at most 2 region servers are dead at any point
 * in time. The expected behavior is that all reads with stale mode true will return
 * before the timeout (5 sec by default). The test fails if the read requests does not finish
 * in time.
 *
 * <p> This test uses LoadTestTool to read and write the data from a single client but
 * multiple threads. The data is written first, then we allow the region replicas to catch
 * up. Then we start the reader threads doing get requests with stale mode true. Chaos Monkey
is
 * started after some delay (20 sec by default) after the reader threads are started so that
 * there is enough time to fully cache meta.
{code}

I am using this to test HBASE-10355, and the server side patches.

> Create an IntegrationTest for region replicas
> ---------------------------------------------
>
>                 Key: HBASE-10572
>                 URL: https://issues.apache.org/jira/browse/HBASE-10572
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Enis Soztutar
>            Assignee: Enis Soztutar
>             Fix For: hbase-10070
>
>         Attachments: hbase-10572_v0.patch, hbase-10572_v1.patch
>
>
> We should add an integration test for testing reads from replicas with chaos monkey.

> I am thinking of a test which: 
>  - Creates a table with region replication
>  - Writes some data to a table with many regions per server. Ensures that the replicas
sees the data.
>  - Does time bounded gets (5 sec, etc) with timeline consistency. Failing to complete
the reads with a smaller latency will fail the test
>  - Runs Chaos Monkey to kill the region servers, master and runs balance. We do not want
other CM actions (flush, snapshot, etc) 



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