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Date: Fri, 7 Jul 2017 20:51:00 +0000 (UTC)
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Subject: [jira] [Commented] (MAPREDUCE-6246) DBOutputFormat.java appending
 extra semicolon to query which is incompatible with DB2
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archived-at: Fri, 07 Jul 2017 20:51:05 -0000


    [ https://issues.apache.org/jira/browse/MAPREDUCE-6246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16078669#comment-16078669 ] 

Hudson commented on MAPREDUCE-6246:
-----------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #11976 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/11976/])
MAPREDUCE-6246. DBOutputFormat.java appending extra semicolon to query (junping_du: rev f484a6ff602d48413556a1d046670e2003c71c2e)
* (edit) hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/lib/db/DBOutputFormat.java
* (edit) hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/lib/db/TestDBOutputFormat.java


> DBOutputFormat.java appending extra semicolon to query which is incompatible with DB2
> -------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-6246
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6246
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: mrv1, mrv2
>    Affects Versions: 2.4.1
>         Environment: OS: RHEL 5.x, RHEL 6.x, SLES 11.x
> Platform: xSeries, pSeries
> Browser: Firefox, IE
> Security Settings: No Security, Flat file, LDAP, PAM
> File System: HDFS, GPFS FPO
>            Reporter: ramtin
>            Assignee: ramtin
>         Attachments: MAPREDUCE-6246.002.patch, MAPREDUCE-6246.003.patch, MAPREDUCE-6246.004.patch, MAPREDUCE-6246.patch
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> DBoutputformat is used for writing output of mapreduce jobs to the database and when used with db2 jdbc drivers it fails with following error
> com.ibm.db2.jcc.am.SqlSyntaxErrorException: DB2 SQL Error: SQLCODE=-104, SQLSTATE=42601, SQLERRMC=;;,COUNT) VALUES (?,?);END-OF-STATEMENT, DRIVER=4.16.53 at com.ibm.db2.jcc.am.fd.a(fd.java:739) at com.ibm.db2.jcc.am.fd.a(fd.java:60) at com.ibm.db2.jcc.am.fd.a(fd.java:127)
> In DBOutputFormat class there is constructQuery method that generates "INSERT INTO" statement with semicolon(";") at the end.
> Semicolon is ANSI SQL-92 standard character for a statement terminator but this feature is disabled(OFF) as a default settings in IBM DB2.
> Although by using -t we can turn it ON for db2. (http://www-01.ibm.com/support/knowledgecenter/SSEPGG_9.7.0/com.ibm.db2.luw.admin.cmd.doc/doc/r0010410.html?cp=SSEPGG_9.7.0%2F3-6-2-0-2). But there are some products that already built on top of this default setting (OFF) so by turning ON this feature make them error prone.


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