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https://issues.apache.org/jira/browse/HBASE-9305?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Purtell updated HBASE-9305:
----------------------------------
Attachment: 9305.patch
Triage by not checking hit counts at the problematic point in the test. May
just move the problem. Testing.
> [0.92] TestFromClientSide.testCacheOnWriteEvictOnClose fails occasionally
> -------------------------------------------------------------------------
>
> Key: HBASE-9305
> URL: https://issues.apache.org/jira/browse/HBASE-9305
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.92.3
> Reporter: Andrew Purtell
> Assignee: Andrew Purtell
> Priority: Minor
> Attachments: 9305.patch
>
>
> The assertion failures are like this:
> {noformat}
> java.lang.AssertionError: expected:<2089> but was:<2109>
> at org.junit.Assert.fail(Assert.java:93)
> at org.junit.Assert.failNotEquals(Assert.java:647)
> at org.junit.Assert.assertEquals(Assert.java:128)
> at org.junit.Assert.assertEquals(Assert.java:472)
> at org.junit.Assert.assertEquals(Assert.java:456)
> at
> org.apache.hadoop.hbase.client.TestFromClientSide.testCacheOnWriteEvictOnClose(TestFromClientSide.java:4248)
> {noformat}
> Also:
> {noformat}
> expected:<2067> but was:<2087>
> {noformat}
> {noformat}
> expected:<2070> but was:<2090>
> {noformat}
> The test saves off the current block cache stats - block count and hits and
> misses - then puts a value and gets it back:
> {code}
> 4242: Put put = new Put(ROW);
> 4243: put.add(FAMILY, QUALIFIER, data);
> 4244: table.put(put);
> 4245: assertTrue(Bytes.equals(table.get(new Get(ROW)).value(), data));
> {code}
> then we have these asserts:
> {code}
> 4246: //data was in memstore so don't expect any changes
> 4247: assertEquals(startBlockCount, cache.getBlockCount());
> 4248: assertEquals(startBlockHits, cache.getStats().getHitCount());
> 4249: assertEquals(startBlockMiss, cache.getStats().getMissCount());
> {code}
> There are exactly 20 more hits than expected every time. In the log looks
> like there's a meta scan happening around the same time.
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