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https://issues.apache.org/jira/browse/HBASE-847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12627539#action_12627539
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Jim Kellerman commented on HBASE-847:
-------------------------------------
What needs to be done:
o.a.h.h.ipc.HRegionInterface:
- bump versionID
- change:
{code}
public RowResult getRow(final byte[] regionName, final byte[] row, final
byte[][] columns, final long ts, final long lockId)
// to:
public RowResult getRow(final byte[] regionName, final byte[] row, final
byte[][] columns, final long ts, final int numVersions, final long lockId)
{code}
o.a.h.h.client.HTable:
- add overloads to getRow:
{code}
public RowResult getRow(String row, int numVersions)
public RowResult getRow(String row, long timestamp, int numVersions)
public RowResult getRow(String row, String[] columns, int numVersions)
public RowResult getRow(String row, String[] columns, long timestamp, int
numVersions)
public RowResult getRow(String row, String[] columns, long timestamp, int
numVersions, RowLock rowLock)
public RowResult getRow(byte[] row, int numVersions)
public RowResult getRow(byte[] row, long timestamp, int numVersions)
public RowResult getRow(byte[] row, byte[][] columns, int numVersions)
public RowResult getRow(byte[] row, byte[][] columns, long timestamp, int
numVersions)
{code}
- replace:
{code}
public RowResult getRow(byte[] row, byte[][] columns, long timestamp, RowLock
rowLock)
// with:
public RowResult getRow(byte[] row, byte[][] columns, long timestamp, int
numVersions, RowLock rowLock)
{code}
All getRow(String...) methods should call:
{code}
public RowResult getRow(String row, String[] columns, long timestamp, int
numVersions, RowLock rowLock)
// which calls:
public RowResult getRow(byte[] row, byte[][] columns, long timestamp, int
numVersions, RowLock rowLock)
{code}
Similarly all getRow(byte[]...) methods should call:
{code}
public RowResult getRow(byte[] row, byte[][] columns, long timestamp, int
numVersions, RowLock rowLock)
{code}
which will use the new getRow api in HRegionInterface described above.
Modify HRegionServer.getRow to match the change in HRegionInterface. This will
require corresponding changes to HRegion.getFull,
HStore.{getFull,getFullFromMapFile} and Memcache.{getFull,internalGetFull}
Multiple values and timestamps for the same column:family can be stored in a
single Cell using either of the constructors:
{code}
Cell(String[] vals, long[] ts)
Cell(byte[][] vals, long[] ts)
{code}
> new API: HTable.getRow with numVersion specified
> ------------------------------------------------
>
> Key: HBASE-847
> URL: https://issues.apache.org/jira/browse/HBASE-847
> Project: Hadoop HBase
> Issue Type: New Feature
> Components: client
> Affects Versions: 0.2.0
> Reporter: Michael Bieniosek
> Assignee: Jim Kellerman
> Fix For: 0.19.0
>
>
> I'd like to be able to call HTable.getRow with numVersions, and get multiple
> versions for each column.
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