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From "xiangdong Huang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-8581) Null pointer in cassandra.hadoop.ColumnFamilyRecoderWriter
Date Sat, 10 Jan 2015 14:04:34 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-8581?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14272506#comment-14272506
] 

xiangdong Huang commented on CASSANDRA-8581:
--------------------------------------------

This is my patch. 
https://github.com/jixuan1989/cassandra/blob/comment-cassandra-1.2/src/java/org/apache/cassandra/hadoop/ColumnFamilyRecordWriter.java


> Null pointer in cassandra.hadoop.ColumnFamilyRecoderWriter
> ----------------------------------------------------------
>
>                 Key: CASSANDRA-8581
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8581
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Hadoop
>            Reporter: xiangdong Huang
>            Assignee: Brandon Williams
>              Labels: hadoop
>             Fix For: 2.1.3
>
>         Attachments: 屏幕快照 2015-01-08 下午7.59.29.png, 屏幕快照 2015-01-08
下午8.01.15.png, 屏幕快照 2015-01-08 下午8.07.23.png
>
>
> When I run examples/hadoop_word_count. I find that ReducerToFilesystem is correct but
when I use ReducerToCassandra, the program will call loadYaml().
> The reason is that the program catch a exception at line 196 of ColumnFamilyRecoderWriter.java.

> Then it check why the exception occur, then it loadYaml to check if the disk is broken...
> However, the exception is NullPointerException. because the client is not initialized.
>  
> So we need a check to judge whether the client is null. 
> (
> The exception, original code and fixed code are in the attachments.
> )



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