hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6942) Endpoint implementation for bulk delete rows
Date Sat, 13 Oct 2012 04:11:03 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13475522#comment-13475522

Ted Yu commented on HBASE-6942:

+public class BulkDeleteEndpoint extends BaseEndpointCoprocessor implements BulkDeleteProtocol
Please add annotation for audience and stability.
+        List<byte[]> deleteRowKeys = new ArrayList<byte[]>(rowBatchSize);
Should a Set be used ? The use case is for deleting entire rows. We just need to collect unique
row keys.
+    if (scan.getFilter() == null) {
+      // What we need is just the rowkeys. So only 1st KV from any row is enough.
+      scan.setFilter(new FirstKeyOnlyFilter());
+    }
If user has specified Filter already but the Filter would return many KeyValues from one row,
should we introduce FirstKeyOnlyFilter through FilterList ?
> Endpoint implementation for bulk delete rows
> --------------------------------------------
>                 Key: HBASE-6942
>                 URL: https://issues.apache.org/jira/browse/HBASE-6942
>             Project: HBase
>          Issue Type: Improvement
>          Components: Coprocessors, Performance
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 0.94.3, 0.96.0
>         Attachments: HBASE-6942.patch, HBASE-6942_V2.patch, HBASE-6942_V3.patch
> We can provide an end point implementation for doing a bulk deletion of rows(based on
a scan) at the server side. This can reduce the time taken for such an operation as right
now it need to do a scan to client and issue delete(s) using rowkeys.
> Query like  delete from table1 where...

This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

View raw message