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Date: Mon, 10 Aug 2015 00:21:46 +0000 (UTC)
From: "Hadoop QA (JIRA)" <jira@apache.org>
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 <JIRA.12819921.1428632285240@arcas>
Subject: [jira] [Commented] (HBASE-13446) Add docs warning about missing
 data for downstream on versions prior to HBASE-13262
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    [ https://issues.apache.org/jira/browse/HBASE-13446?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14679427#comment-14679427 ] 

Hadoop QA commented on HBASE-13446:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12749493/HBASE-13446.patch
  against master branch at commit 5bdb0eb91290e306213bca62cea82c5d1b24d317.
  ATTACHMENT ID: 12749493

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+0 tests included{color}.  The patch appears to be a documentation patch that doesn't require tests.

    {color:green}+1 hadoop versions{color}. The patch compiles with all supported hadoop versions (2.4.0 2.4.1 2.5.0 2.5.1 2.5.2 2.6.0 2.7.0)

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of javac compiler warnings.

    {color:green}+1 protoc{color}.  The applied patch does not increase the total number of protoc compiler warnings.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:green}+1 checkstyle{color}.  The applied patch does not increase the total number of checkstyle errors

    {color:green}+1 findbugs{color}.  The patch does not introduce any  new Findbugs (version 2.0.3) warnings.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

  {color:green}+1 site{color}.  The mvn post-site goal succeeds with this patch.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:
     

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/15017//testReport/
Release Findbugs (version 2.0.3) 	warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/15017//artifact/patchprocess/newFindbugsWarnings.html
Checkstyle Errors: https://builds.apache.org/job/PreCommit-HBASE-Build/15017//artifact/patchprocess/checkstyle-aggregate.html

  Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/15017//console

This message is automatically generated.

> Add docs warning about missing data for downstream on versions prior to HBASE-13262
> -----------------------------------------------------------------------------------
>
>                 Key: HBASE-13446
>                 URL: https://issues.apache.org/jira/browse/HBASE-13446
>             Project: HBase
>          Issue Type: Task
>          Components: documentation
>    Affects Versions: 0.98.0, 1.0.0
>            Reporter: Sean Busbey
>            Assignee: Misty Stanley-Jones
>            Priority: Critical
>             Fix For: 2.0.0, 0.98.14, 1.0.3
>
>         Attachments: HBASE-13446.patch
>
>
> From conversation at the end of HBASE-13262:
> [~davelatham]
> {quote}
> Should we put a warning somewhere (mailing list? book?) about this? Something like:
> IF (client OR server is <= 0.98.11/1.0.0) AND server has a smaller value for hbase.client.scanner.max.result.size than client does, THEN scan requests that reach the server's hbase.client.scanner.max.result.size are likely to miss data. In particular, 0.98.11 defaults hbase.client.scanner.max.result.size to 2MB but other versions default to larger values, so be very careful using 0.98.11 servers with any other client version.
> {quote}
> [~busbey]
> {quote}
> How about we add a note in the ref guide for upgrades and for
> troubleshooting?
> {quote}


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