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https://issues.apache.org/jira/browse/MAPREDUCE-2779?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Konstantin Shvachko updated MAPREDUCE-2779:
-------------------------------------------
Attachment: MAPREDUCE-2779-trunk.patch
> JobSplitWriter.java can't handle large job.split file
> -----------------------------------------------------
>
> Key: MAPREDUCE-2779
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2779
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: job submission
> Affects Versions: 0.20.205.0, 0.22.0, 0.23.0
> Reporter: Ming Ma
> Assignee: Ming Ma
> Fix For: 0.22.0
>
> Attachments: MAPREDUCE-2779-0.22.patch, MAPREDUCE-2779-trunk.patch,
> MAPREDUCE-2779-trunk.patch
>
>
> We use cascading MultiInputFormat. MultiInputFormat sometimes generates big
> job.split used internally by hadoop, sometimes it can go beyond 2GB.
> In JobSplitWriter.java, the function that generates such file uses 32bit
> signed integer to compute offset into job.split.
> writeNewSplits
> ...
> int prevCount = out.size();
> ...
> int currCount = out.size();
> writeOldSplits
> ...
> long offset = out.size();
> ...
> int currLen = out.size();
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