Hello, Thank you for reporting this. The root cause is that commons-cli OptionBuilder is not thread-safe.
https://commons.apache.org/proper/commons-cli/apidocs/org/apache/commons/cl i/OptionBuilder.html According to this issue, commons-cli doesn't plan to change that and instead chose to document the lack of thread-safety. https://issues.apache.org/jira/browse/CLI-209 I think we can solve this in Hadoop, probably with a one-line change to make GenericOptionsParser#buildGeneralOptions a synchronized method. I'm not aware of any existing JIRA that tracks this. Would you be interested in filing a new JIRA, and possibly contributing a patch? --Chris Nauroth On 5/17/16, 7:10 PM, "hongbin ma" <mahong...@apache.org> wrote: >Hi experts > >I'm running into similar issues like >http://stackoverflow.com/questions/22462665/is-hadoops-toorunner-thread-sa >fe, >the author's observation seem to make sense to me. However when I checked >the hadoop github trunk I found the issue still not fixed. > >Is there any JIRA tracking this issue? Or it is "Not a Problem"? > >thanks --------------------------------------------------------------------- To unsubscribe, e-mail: common-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-dev-h...@hadoop.apache.org
