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From "Suhas Gogate (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-4863) Setting up ctr-A as custom delimiter for "mapred.textoutputformat.separator"
Date Sat, 13 Dec 2008 00:36:44 GMT
Setting up ctr-A as custom delimiter for "mapred.textoutputformat.separator"
----------------------------------------------------------------------------

                 Key: HADOOP-4863
                 URL: https://issues.apache.org/jira/browse/HADOOP-4863
             Project: Hadoop Core
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.18.2
            Reporter: Suhas Gogate


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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