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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HADOOP-7542) Change XML format to 1.1 to add support for serializing additional characters
Date Sun, 23 Sep 2012 10:56:08 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-7542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J resolved HADOOP-7542.
-----------------------------

      Resolution: Won't Fix
    Release Note:   (was: Changes the Configuration file's XML format to 1.1 from 1.0, which
adds support for serializing additional separator characters.)

Thanks Steve. For the original reason of the textoutputformat separator config, I've filed
MAPREDUCE-4677 for getting that done.
                
> Change XML format to 1.1 to add support for serializing additional characters
> -----------------------------------------------------------------------------
>
>                 Key: HADOOP-7542
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7542
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: conf
>    Affects Versions: 0.20.2
>            Reporter: Suhas Gogate
>            Assignee: Michael Katzenellenbogen
>         Attachments: HADOOP-7542-v1.patch, MAPREDUCE-109.patch, MAPREDUCE-109-v2.patch,
MAPREDUCE-109-v3.patch, MAPREDUCE-109-v4.patch
>
>
> Feature added by this Jira has a problem while setting up some of the invalid xml characters
e.g. ctrl-A e.g. mapred.textoutputformat.separator = "\u0001"
> e,g,
> String delim = "\u0001";
> Conf.set("mapred.textoutputformat.separator", delim);
> Job client serializes the jobconf with mapred.textoutputformat.separator set to "\u0001"
(ctrl-A) and problem happens when it is de-serialized (read back) by job tracker, where it
encounters invalid xml character.
> The test for this feature public : testFormatWithCustomSeparator() does not serialize
the jobconf after adding the separator as ctrl-A and hence does not detect the specific problem.
> Here is an exception:
> 08/12/06 01:40:50 INFO mapred.FileInputFormat: Total input paths to process : 1
> org.apache.hadoop.ipc.RemoteException: java.io.IOException:
> java.lang.RuntimeException: org.xml.sax.SAXParseException: Character reference "&#1"
is an invalid XML
> character.
> at
> org.apache.hadoop.conf.Configuration.loadResource(Configuration.java:961)
> at
> org.apache.hadoop.conf.Configuration.loadResources(Configuration.java:864)
> at
> org.apache.hadoop.conf.Configuration.getProps(Configuration.java:832)
> at org.apache.hadoop.conf.Configuration.get(Configuration.java:291)
> at
> org.apache.hadoop.mapred.JobConf.getJobPriority(JobConf.java:1163)
> at
> org.apache.hadoop.mapred.JobInProgress.<init>(JobInProgress.java:179)
> at
> org.apache.hadoop.mapred.JobTracker.submitJob(JobTracker.java:1783)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:452)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:888)
> at org.apache.hadoop.ipc.Client.call(Client.java:715)
> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:216)
> at org.apache.hadoop.mapred.$Proxy1.submitJob(Unknown Source)
> at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:788)
> at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1026)
> at

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