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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12266) Slow Scan can cause dead loop in ClientScanner
Date Wed, 15 Oct 2014 16:21:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14172528#comment-14172528
] 

Anoop Sam John commented on HBASE-12266:
----------------------------------------

This is not helping?
{code}
if (retryAfterOutOfOrderException) {
                retryAfterOutOfOrderException = false;
              } else {
                // TODO: Why wrap this in a DNRIOE when it already is a DNRIOE?
                throw new DoNotRetryIOException("Failed after retry of " +
                  "OutOfOrderScannerNextException: was there a rpc timeout?", e);
              }
{code}

The change in the patch makes that in one next() call at max one time a reset and re scan
can happen (when OutOfOrderScannerNextExpception)!

> Slow Scan can cause dead loop in ClientScanner 
> -----------------------------------------------
>
>                 Key: HBASE-12266
>                 URL: https://issues.apache.org/jira/browse/HBASE-12266
>             Project: HBase
>          Issue Type: Bug
>          Components: Scanners
>    Affects Versions: 0.96.0
>            Reporter: Qiang Tian
>            Priority: Minor
>         Attachments: HBASE-12266-master.patch
>
>
> see http://search-hadoop.com/m/DHED45SVsC1.



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