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https://issues.apache.org/jira/browse/HBASE-12321?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14179933#comment-14179933
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Anoop Sam John commented on HBASE-12321:
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Delete#deleteColumn(byte[], byte[]) is supposed to delete one version of the
column and in case of the normal HTable API call, the HRS get the latest column
and get its ts and assign to this delete KV. In case of bulk load can you put
this ts? Are you really want to delete an exact version or you want to delete
a rk:column value(s)?
> Delete#deleteColumn seems not to work with bulkload
> ---------------------------------------------------
>
> Key: HBASE-12321
> URL: https://issues.apache.org/jira/browse/HBASE-12321
> Project: HBase
> Issue Type: Bug
> Components: Deletes, HFile, mapreduce
> Affects Versions: 0.94.6
> Reporter: Jan Lukavsky
> Priority: Minor
>
> When using call to {{Delete#deleteColumn(byte[], byte[])}} to produce
> KeyValues that are subsequently written to HFileOutputFormat and bulk loaded
> into HBase, the Delete seems to be ignored. The reason for this is likely to
> be the missing (HConstants.LATEST_TIMESTAMP) timestamp in the KeyValue with
> type {{KeyValue.Type.Delete}}. I think the RegionServer than cannot delete
> the contents of the column due to mismatch in the timestamp.
> When using {{Delete#deleteColumns}} everything works fine, because of
> different type {{KeyValue.Type.DeleteColumn}}.
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