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HBase >> mail # dev >> does append delete all cell versions except the last one?


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Re: does append delete all cell versions except the last one?
Take a look at the release notes for:
https://issues.apache.org/jira/browse/HBASE-4583

The fix went to 0.95.0

Cheers

On Mon, Jul 22, 2013 at 4:20 PM, Vladimir Rodionov
<[EMAIL PROTECTED]>wrote:

> Forgot to mention: 0.94.6.1 (CDH 4.3)
>
> Best regards,
> Vladimir Rodionov
> Principal Platform Engineer
> Carrier IQ, www.carrieriq.com
> e-mail: [EMAIL PROTECTED]
>
> ________________________________________
> From: Vladimir Rodionov
> Sent: Monday, July 22, 2013 4:17 PM
> To: [EMAIL PROTECTED]; lars hofhansl
> Subject: does append delete all cell versions except the last one?
>
> I am doing some tests of append operation (HTable.append(Append append))
> and it seems that
> if cell being appended has multiple versions , all except the last one get
> deleted. Is it correct behavior or I am doing something wrong in my tests?
>
> The test is simple. I have a row with 3 CF and 3 qualifiers in each CF and
> 10 versions (total # KVs stored for row is 90). I test append on the row
> (for each CF:Qualifier combination)
>
> public void testAppend()
> {
>                 int index = 2;
>
>                 LOG.error("Test append started. Testing "+index+" row");
>
>                 byte[] row = data.get(index).get(0).getRow();
>                 byte[] toAppend = "APPEND".getBytes();
>                 LOG.error(" Append row: "+ new String(row));
>
>                 // Get all data for the row
>                 Get get = createGet(row, null, null, null);
>                 get.setMaxVersions(Integer.MAX_VALUE);
>                 Result result = tableA.get(get);
>                 List<KeyValue> ll = result.list();
>                // Correct list size is 3 (total families)*3 (total
> columns) *10 (# versions)    = 90
>
>                assertEquals( 90, ll.size() );
>
>                // Do append to All 3 * 3 = 9 cells in a row
>                 Append append = createAppend(row, Arrays.asList(FAMILIES),
> Arrays.asList(COLUMNS), toAppend);
>                 Result r = tableA.append(append);
>
>                 ll = r.list();
>                 assertEquals( 9, ll.size() );
>
>                 // Check row again
>                 get = createGet(row, null, null, null);
>                 get.setMaxVersions(Integer.MAX_VALUE);
>
>                 result = tableA.get(get);
>
>                 assertEquals (90, result.size()); // This assertion FAILS:
> actual size is 9
>
> }
>
> Best regards,
> Vladimir Rodionov
> Principal Platform Engineer
> Carrier IQ, www.carrieriq.com
> e-mail: [EMAIL PROTECTED]
>
>
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB