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https://issues.apache.org/jira/browse/PIG-1828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12988160#action_12988160
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Dmitriy V. Ryaboy commented on PIG-1828:
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Ashutosh,
HBase stores records ordered by their keys, and splits the keyspace into
regions as needed (unlike something like Cassandra, which by default uses hash
partitioning and can be *made* to use total order partitions, total order is
the *only* thing HBase does).
Indeed, implementing OLF didn't solve my problem as the splits were still
combined. I don't know if TableSplits are stateful.
> HBaseStorage has problems with processing multiregion tables
> ------------------------------------------------------------
>
> Key: PIG-1828
> URL: https://issues.apache.org/jira/browse/PIG-1828
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.8.0
> Environment: Hadoop 0.20.2, Hbase 0.20.6, Distributed mode
> Reporter: Lukas
>
> As brought up in the pig user mailing list
> (http://www.mail-archive.com/user%40pig.apache.org/msg00606.html) Pig does
> sometime not scan the full HBase table.
> It seems that HBaseStorage has problems scanning large tables. It issues just
> one mapper job instead of one mapper job per table region.
> Ian Stevens, who brought this issue up in the mailing list, attached a script
> to reproduce the problem (https://gist.github.com/766929).
> However, in my case, the problem only occurred, after the table was split
> into more than one regions.
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