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https://issues.apache.org/jira/browse/FALCON-912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14222733#comment-14222733
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Suhas Vasu commented on FALCON-912:
-----------------------------------
Thoughts ?
> Lineage recorder fails at createFileSystem()
> --------------------------------------------
>
> Key: FALCON-912
> URL: https://issues.apache.org/jira/browse/FALCON-912
> Project: Falcon
> Issue Type: Bug
> Reporter: Suhas Vasu
>
> We recently had an instance where falcon post-processing was failing at
> LineageRecorder.
> The exact scenario was - the log retention was set to a very low period and
> as a result the logs directory in the staging directory for the process got
> deleted on hdfs as it was empty. So when the next instance ran, in the
> succeeded-postprocessing LineageRecorder tries creating directories on the
> hdfs in the staging directory for the particular process and it fails with
> incorrect permissions.
> {noformat}
> try {
> return createFileSystem(UserGroupInformation.getLoginUser(), uri,
> conf);
> } catch (IOException e) {
> throw new FalconException("Exception while getting FileSystem
> for: " + uri, e);
> }
> {noformat}
> The post processing runs as login user which is mapred but the owner of the
> staging directory is the owner specified in the feed/process.
> So it should be {{UserGroupInformation.getCurrentUser()}} rather than
> {{UserGroupInformation.getLoginUser()}}
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