crunch-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Josh Wills (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CRUNCH-626) HBaseSourceTarget Binary compatibility across HBase versions
Date Tue, 25 Oct 2016 19:30:58 GMT

    [ https://issues.apache.org/jira/browse/CRUNCH-626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15606244#comment-15606244
] 

Josh Wills commented on CRUNCH-626:
-----------------------------------

Nah, that's how I would have done it-- we did similar stuff for the different TaskAttemptContext
impls across Hadoop 1.x and 2.x.

> HBaseSourceTarget Binary compatibility across HBase versions
> ------------------------------------------------------------
>
>                 Key: CRUNCH-626
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-626
>             Project: Crunch
>          Issue Type: Improvement
>          Components: IO
>            Reporter: Micah Whitacre
>            Assignee: Micah Whitacre
>         Attachments: CRUNCH-626.patch
>
>
> Currently Crunch targets HBase 1.0.   Certain vendors however are trying to maintain
API compatibility with HBase 0.96, 0.98, 1.0, and all 1.x.  
> While the API compatibility is ok across these versions, it was however not binary compatible
as HBase changed the method signature from returning void[1] to returning OperationWithAttributes[1]
(and in later versions Scan).
> This results in an exception like the following, when you try to use the latest Crunch
0.14 release against that vendor's distribution of HBase which we should be theoretically
compatible with.
> {noformat}
> java.lang.NoSuchMethodError: org.apache.hadoop.hbase.client.Scan.setAttribute(Ljava/lang/String;[B)Lorg/apache/hadoop/hbase/client/Scan;
> at org.apache.crunch.io.hbase.HBaseSourceTarget.<init>(HBaseSourceTarget.java:112)
> at org.apache.crunch.io.hbase.HBaseSourceTarget.<init>(HBaseSourceTarget.java:96)
> at org.apache.crunch.io.hbase.HBaseSourceTarget.<init>(HBaseSourceTarget.java:88)
> {noformat}
> [1] - https://github.com/apache/hbase/blob/rel/0.98.0/hbase-client/src/main/java/org/apache/hadoop/hbase/client/OperationWithAttributes.java#L40
> [2] - https://github.com/apache/hbase/blob/rel/1.0.0/hbase-client/src/main/java/org/apache/hadoop/hbase/client/OperationWithAttributes.java#L41



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message