[ https://issues.apache.org/jira/browse/MAPREDUCE-6823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Loughran updated MAPREDUCE-6823: -------------------------------------- Attachment: (was: MAPREDUCE-6823-004.patch) > FileOutputFormat to support configurable PathOutputCommitter factory > -------------------------------------------------------------------- > > Key: MAPREDUCE-6823 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-6823 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: mrv2 > Affects Versions: 3.0.0-alpha2 > Environment: Targeting S3 as the output of work > Reporter: Steve Loughran > Assignee: Steve Loughran > Attachments: HADOOP-13786-HADOOP-13345-001.patch, > MAPREDUCE-6823-002.patch, MAPREDUCE-6823-002.patch, MAPREDUCE-6823-004.patch > > > In HADOOP-13786 I'm adding a custom subclass for FileOutputFormat, one which > can talk direct to the S3A Filesystem for more efficient operations, better > failure modes, and, most critically, as part of HADOOP-13345, atomic commit > of output. The normal committer relies on directory rename() being atomic for > this; for S3 we don't have that luxury. > To support a custom committer, we need to be able to tell FileOutputFormat > (and implicitly, all subclasses which don't have their own custom committer), > to use our new {{S3AOutputCommitter}}. > I propose: > # {{FileOutputFormat}} takes a factory to create committers. > # The factory to take a URI and {{TaskAttemptContext}} and return a committer > # the default implementation always returns a {{FileOutputCommitter}} > # A configuration option allows a new factory to be named > # An {{S3AOutputCommitterFactory}} to return a {{FileOutputCommitter}} or > new {{S3AOutputCommitter}} depending upon the URI of the destination. > Note that MRv1 already supports configurable committers; this is only the V2 > API -- This message was sent by Atlassian JIRA (v6.4.14#64029) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-issues-h...@hadoop.apache.org