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https://issues.apache.org/jira/browse/CRUNCH-660?focusedWorklogId=200836&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-200836
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ASF GitHub Bot logged work on CRUNCH-660:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Feb/19 19:42
Start Date: 19/Feb/19 19:42
Worklog Time Spent: 10m
Work Description: noslowerdna commented on issue #17: CRUNCH-660,
CRUNCH-675: Use DistCp instead of FileUtils.copy when sou…
URL: https://github.com/apache/crunch/pull/17#issuecomment-465280884
This was committed here:
https://github.com/apache/crunch/commit/07458f78282e1b55aee90960818f5fcb35dae5c0
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Issue Time Tracking
-------------------
Worklog Id: (was: 200836)
Time Spent: 10m
Remaining Estimate: 0h
> FileTargetImpl uses Distcp vs FileUtils.copy
> --------------------------------------------
>
> Key: CRUNCH-660
> URL: https://issues.apache.org/jira/browse/CRUNCH-660
> Project: Crunch
> Issue Type: Improvement
> Components: Core
> Reporter: Micah Whitacre
> Assignee: Josh Wills
> Priority: Major
> Fix For: 1.0.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> So for handling multiple runtimes I'm not sure there is a way to solve this
> but documenting as a JIRA regardless.
> If you are running in a multi-cluster environment where you might want to
> read data from one cluster and then write the output on another cluster (e.g.
> generating HFiles to be loaded into a separate HBase cluster), the
> performance of moving files is noticeable. Specifically due to the fact that
> the moving of the files happens in the launcher/driver process versus as part
> of the node execution it seems.[1]
> An efficient option would be to kick off a DistCp instead but that would tie
> the target directly to a runtime which is not a great approach.
> [1] -
> https://github.com/apache/crunch/blob/5609b014378d3460a55ce25522f0c00659872807/crunch-core/src/main/java/org/apache/crunch/io/impl/FileTargetImpl.java#L157
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