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https://issues.apache.org/jira/browse/HBASE-867?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12717118#action_12717118
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stack commented on HBASE-867:
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Whats above saying JGray? That you added single row with a million columns?
And then you did 10 gets and they took 2.5ms on average to complete? Which
column were you getting?
Scans would be good to get numbers for. That was reason for original filing.
Good stuff.
> If millions of columns in a column family, hbase scanner won't come up
> ----------------------------------------------------------------------
>
> Key: HBASE-867
> URL: https://issues.apache.org/jira/browse/HBASE-867
> Project: Hadoop HBase
> Issue Type: Bug
> Reporter: stack
> Assignee: Jonathan Gray
> Priority: Critical
> Fix For: 0.20.0
>
>
> Our Daniel has uploaded a table that has a column family with millions of
> columns in it. He can get items from the table promptly specifying row and
> column. Scanning is another matter. Thread dumping I see we're stuck in the
> scanner constructor nexting through cells.
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