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https://issues.apache.org/jira/browse/HBASE-22274?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16827385#comment-16827385
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Xu Cang commented on HBASE-22274:
---------------------------------
The test #testCheckAndDeleteWithCompareOp is flaky. It fails at different
places at different time.
I put a debug log below. And I can see when it fails, the cell value is NULL.
Meaning the previous *'table.put'* did not put data or did not finish flush the
data before the check happens next line. And I checked in this test,
'autoFlush' is true.
So, I don't understand why Put can sometimes fail in this scenario.
{code:java}
table.put(put3);
ok = table.checkAndDelete(ROW, FAMILY, QUALIFIER, CompareOp.NOT_EQUAL, value4,
delete);
if(!ok){
Result resultGet = table.get(new Get(ROW));
LOG.info("debug " + resultGet.getValue(FAMILY,QUALIFIER));
}{code}
> Cell size limit check on append should consider cell's previous size.
> ---------------------------------------------------------------------
>
> Key: HBASE-22274
> URL: https://issues.apache.org/jira/browse/HBASE-22274
> Project: HBase
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.0.0, 1.3.5
> Reporter: Xu Cang
> Assignee: Xu Cang
> Priority: Minor
> Attachments: HBASE-22274-branch-1.001.patch,
> HBASE-22274-branch-1.002.patch, HBASE-22274-master.001.patch,
> HBASE-22274-master.002.patch, HBASE-22274-master.002.patch,
> HBASE-22274-master.003.patch
>
>
> Now we have cell size limit check based on this parameter
> *hbase.server.keyvalue.maxsize*
> One case was missing: appending to a cell only take append op's cell size
> into account against this limit check. we should check against the potential
> final cell size after the append.'
> It's easy to reproduce this :
>
> Apply this diff
>
> {code:java}
> diff --git
> a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
>
> b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
> index 5a285ef6ba..8633177ebe 100644 ---
> a/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
> +++
> b/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
> @@ -6455,7 +6455,7
> - t.append(new Append(ROW).addColumn(FAMILY, QUALIFIER, new byte[10 *
> 1024]));
> + t.append(new Append(ROW).addColumn(FAMILY, QUALIFIER, new byte[2 * 1024]));
> {code}
>
> Fix is to add this check in #reckonDeltas in HRegion class, where we have
> already got the appended cell's size.
> Will throw DoNotRetryIOException if checks is failed.
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