hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Sean Busbey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19052) FixedFileTrailer should recognize CellComparatorImpl class in branch-1.x
Date Fri, 27 Oct 2017 17:33:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19052?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16222732#comment-16222732
] 

Sean Busbey commented on HBASE-19052:
-------------------------------------

Also I guess call out that folks should not try to rolling upgrade to the alpha versions,
since now this part of it succeeding or failing will depend on the specific maintenance release
of the 1.y version?

> FixedFileTrailer should recognize CellComparatorImpl class in branch-1.x
> ------------------------------------------------------------------------
>
>                 Key: HBASE-19052
>                 URL: https://issues.apache.org/jira/browse/HBASE-19052
>             Project: HBase
>          Issue Type: Improvement
>          Components: HFile
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Critical
>             Fix For: 1.4.0, 1.3.2, 1.5.0, 1.2.7, 1.1.13
>
>         Attachments: 19052.branch-1.txt
>
>
> HBASE-18945 has gone into branch-2 .
> Let's consider rolling upgrade scenario from 1.x to 2.0 where there're three servers:
s1, s2, s3
> s1 is upgraded to 2.0 first. It flushes to hfile in region r1 with CellComparatorImpl
written in the hfile trailer.
> Somehow s1 crashes and master assigns r1 to s2 which is still running 1.x
> The following code in FixedFileTrailer would be triggered:
> {code}
>       try {
>         comparatorKlass = (Class<? extends CellComparator>) Class.forName(comparatorClassName);
>       } catch (ClassNotFoundException e) {
>         throw new IOException(e);
>       }
> {code}
> since s2 is not aware of CellComparatorImpl.
> This issue is to backport CellComparatorImpl related change to branch-1.x
> Note: CellComparatorImpl wouldn't be used in write path, only in read path.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Mime
View raw message