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https://issues.apache.org/jira/browse/HADOOP-1958?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12543223
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stack commented on HADOOP-1958:
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Would also be nice if you could set table into a mode where compactions were
forced and all in-memory content was flushed as well as setting the table
read-only. This would make it so that the hbase mapfiles in hdfs would have
all updates persisted. The files in the FS would then be as fit as possible
for feeding direct into mapreduce jobs (keys would be row/column/timestamp)
which should be faster than going via the hbase API.
> [hbase] Add a read-only attribute to columns
> --------------------------------------------
>
> Key: HADOOP-1958
> URL: https://issues.apache.org/jira/browse/HADOOP-1958
> Project: Hadoop
> Issue Type: New Feature
> Components: contrib/hbase
> Reporter: stack
> Priority: Minor
>
> One day we'll have support for per-column ACLs. Meantime, it should be
> possible to mark loaded content read-only so it doesn't get trashed
> accidentally.
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