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https://issues.apache.org/jira/browse/PIG-3210?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13720576#comment-13720576
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Cheolsoo Park commented on PIG-3210:
------------------------------------
+1.
To answer Dmitriy's question, the value of pig.logfile is an empty string,
nothing is logged. Here is the relevant code in LogUtils.java:
{code:title=LogUtils.java}
if(logFileName == null || logFileName.equals("")) {
//if exec is invoked programmatically then logFileName will be null
log.warn("There is no log file to write to.");
log.error(bs.toString());
return;
}
{code}
> Pig fails to start when it cannot write log to log files
> --------------------------------------------------------
>
> Key: PIG-3210
> URL: https://issues.apache.org/jira/browse/PIG-3210
> Project: Pig
> Issue Type: Bug
> Components: impl
> Reporter: Meng-Sung Wu
> Assignee: Meng-Sung Wu
> Priority: Minor
> Attachments: PIG-3210.patch
>
>
> Pig will check whether logFileName is null or not before setting to
> pig.logfile property in some places. But forget to check in other places.
> {code:xml}
> 381 pigContext.getProperties().setProperty("pig.logfile",
> (logFileName == null? "": logFileName));
> ...
> 451 pigContext.getProperties().setProperty("pig.logfile",
> logFileName);
> {code}
> {code:xml}
> 12/12/25 16:38:00 WARN pig.Main: Need write permission in the directory:
> /opt/trend/hadooppet/sanity-tm-6/result to create log file.
> 14 2012-12-25 16:38:00,372 [main] INFO org.apache.pig.Main - Apache Pig
> version 0.10.1.tm6 (rexported) compiled Oct 22 2012, 11:11:02
> 15 2012-12-25 16:38:01,712 [main] WARN org.apache.pig.Main - Cannot write to
> log file: /opt/trend/hadooppet/sanity-tm-6/result//akamai.pig1356453481712.log
> 16 2012-12-25 16:38:01,727 [main] ERROR org.apache.pig.Main - ERROR 2999:
> Unexpected internal error. null
> 17 2012-12-25 16:38:01,727 [main] WARN org.apache.pig.Main - There is no log
> file to write to.
> 18 2012-12-25 16:38:01,727 [main] ERROR org.apache.pig.Main -
> java.lang.NullPointerException
> 19 at java.util.Hashtable.put(Hashtable.java:394)
> 20 at java.util.Properties.setProperty(Properties.java:143)
> 21 at org.apache.pig.Main.run(Main.java:542)
> 22 at org.apache.pig.Main.main(Main.java:115)
> 23 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 24 at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 25 at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 26 at java.lang.reflect.Method.invoke(Method.java:597)
> 27 at org.apache.hadoop.util.RunJar.main(RunJar.java:208)
> {code}
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