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https://issues.apache.org/jira/browse/CRUNCH-212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Chao Shi updated CRUNCH-212:
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Attachment: crunch-212-draft.patch
Sorry for the late reply. I finally decided to not use hbase's
HFileOutputFormat and implement our own version as a thin wrapper of
HFile.Writer, because I think the former one is too hacky and is not a pure
output format.
My plan is to leverage crunch's functionality of sort and multiple MR stages
than using HFileOutputFormat's.
More over, I see HFileOutputFormat use a TreeSet to sort KVs in memory at
reducer side. I don't think it is neccessary for us, because we can sort them
during shuffle (HFileOutputFormat sorts on row only in shuffle. I don't know
why).
> Need target wrapper for HFileOuptutFormat
> -----------------------------------------
>
> Key: CRUNCH-212
> URL: https://issues.apache.org/jira/browse/CRUNCH-212
> Project: Crunch
> Issue Type: Improvement
> Components: IO
> Reporter: Chao Shi
> Attachments: crunch-212-draft.patch
>
>
> I need to import data to hbase from MR. I found HFileOutputFormat is ~5x more
> efficient than HTableOutputFormat. So maybe we need a target wrapper for it.
> Future more, is it possible to call HBase to load it automatically after
> HFiles are generated?
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