[
https://issues.apache.org/jira/browse/HBASE-19826?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ankit Singhal updated HBASE-19826:
----------------------------------
Description:
We can provide an option (something like seePastDeleteMarkers) in a scan to let
the user see the versions behind the delete marker even if keepDeletedCells is
set to false in the descriptor.
With the previous version, we workaround the same in pre
{code}
@Override
public KeyValueScanner preStoreScannerOpen(final
ObserverContext<RegionCoprocessorEnvironment> c,
final Store store, final Scan scan, final NavigableSet<byte[]>
targetCols,
final KeyValueScanner s) throws IOException {
if (scan.isRaw() ||
ScanInfoUtil.isKeepDeletedCells(store.getScanInfo()) ||
scan.getTimeRange().getMax() == HConstants.LATEST_TIMESTAMP ||
TransactionUtil.isTransactionalTimestamp(scan.getTimeRange().getMax())) {
return s;
}
ScanInfo scanInfo =
ScanInfoUtil.cloneScanInfoWithKeepDeletedCells(store.getScanInfo());
return new StoreScanner(store, scanInfo, scan, targetCols,
c.getEnvironment().getRegion().getReadpoint(scan.getIsolationLevel()));
}
{code}
was:We can provide an option (something like seePastDeleteMarkers) in a scan
to let the user see the versions behind the delete marker even if
keepDeletedCells is set to false in the descriptor.
> Provide a option to see rows behind a delete in a time range queries
> --------------------------------------------------------------------
>
> Key: HBASE-19826
> URL: https://issues.apache.org/jira/browse/HBASE-19826
> Project: HBase
> Issue Type: Bug
> Reporter: Ankit Singhal
> Assignee: Ankit Singhal
> Priority: Major
> Fix For: 2.0.0-beta-2
>
>
> We can provide an option (something like seePastDeleteMarkers) in a scan to
> let the user see the versions behind the delete marker even if
> keepDeletedCells is set to false in the descriptor.
> With the previous version, we workaround the same in pre
> {code}
> @Override
> public KeyValueScanner preStoreScannerOpen(final
> ObserverContext<RegionCoprocessorEnvironment> c,
> final Store store, final Scan scan, final NavigableSet<byte[]>
> targetCols,
> final KeyValueScanner s) throws IOException {
>
> if (scan.isRaw() ||
> ScanInfoUtil.isKeepDeletedCells(store.getScanInfo()) ||
> scan.getTimeRange().getMax() == HConstants.LATEST_TIMESTAMP ||
> TransactionUtil.isTransactionalTimestamp(scan.getTimeRange().getMax())) {
> return s;
> }
>
> ScanInfo scanInfo =
> ScanInfoUtil.cloneScanInfoWithKeepDeletedCells(store.getScanInfo());
> return new StoreScanner(store, scanInfo, scan, targetCols,
>
> c.getEnvironment().getRegion().getReadpoint(scan.getIsolationLevel()));
> }
> {code}
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