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https://issues.apache.org/jira/browse/BEAM-5036?focusedWorklogId=146107&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-146107
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ASF GitHub Bot logged work on BEAM-5036:
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Author: ASF GitHub Bot
Created on: 20/Sep/18 19:46
Start Date: 20/Sep/18 19:46
Worklog Time Spent: 10m
Work Description: timrobertson100 commented on issue #6289: [BEAM-5036]
Optimize the FileBasedSink WriteOperation.moveToOutput()
URL: https://github.com/apache/beam/pull/6289#issuecomment-423309448
Thanks everyone.
@chamikaramj - if we are to correctly support an OVERWRITE_EXISTING_FILES
flag I think we'd either have to pass the flag down into the filesystem
implementations themselves, or do like the HDFS one does now and always throw
FileAlreadyExistsException (note a user reports that issue today on user@ with
AvroIO and LocalFileSystem) when the target is in place. The later would
require some of them to do a "does target exist" check before attempting the
move. Do you have a preference on that?
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Issue Time Tracking
-------------------
Worklog Id: (was: 146107)
Time Spent: 3h (was: 2h 50m)
> Optimize FileBasedSink's WriteOperation.moveToOutput()
> ------------------------------------------------------
>
> Key: BEAM-5036
> URL: https://issues.apache.org/jira/browse/BEAM-5036
> Project: Beam
> Issue Type: Improvement
> Components: io-java-files
> Affects Versions: 2.5.0
> Reporter: Jozef Vilcek
> Assignee: Tim Robertson
> Priority: Major
> Time Spent: 3h
> Remaining Estimate: 0h
>
> moveToOutput() methods in FileBasedSink.WriteOperation implements move by
> copy+delete. It would be better to use a rename() which can be much more
> effective for some filesystems.
> Filesystem must support cross-directory rename. BEAM-4861 is related to this
> for the case of HDFS filesystem.
> Feature was discussed here:
> http://mail-archives.apache.org/mod_mbox/beam-dev/201807.mbox/%3CCAF9t7_4Mp54pQ+vRrJrBh9Vx0=uaknupzd_qdh_qdm9vxll...@mail.gmail.com%3E
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