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https://issues.apache.org/jira/browse/HBASE-17723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15906330#comment-15906330
]
Chia-Ping Tsai commented on HBASE-17723:
----------------------------------------
The isPrefetchRunning() may be executed between loadCache() and
prefetchRunning.set(false), so we will end the iteration prematurely if the
caching size is one (the caching is exhausted by last next()).
{noformat}
if (prefetchCondition()) {
// run prefetch in the background only if no prefetch is already
running
if (!isPrefetchRunning()) {
if (prefetchRunning.compareAndSet(false, true)) {
getPool().execute(prefetchRunnable);
}
}
}
{noformat}
{noformat}
try {
loadCache();
} catch (Exception e) {
exceptionsQueue.add(e);
} finally {
prefetchRunning.set(false);
if(closed) {
if (closingThreadId.compareAndSet(NO_THREAD,
Thread.currentThread().getId())) {
// close was waiting for the prefetch to end
close();
}
}
}
}
{noformat}
> TestServerSideScanMetricsFromClientSide and TestRecoveredEdits fail
> -------------------------------------------------------------------
>
> Key: HBASE-17723
> URL: https://issues.apache.org/jira/browse/HBASE-17723
> Project: HBase
> Issue Type: Bug
> Components: integration tests
> Affects Versions: 2.0.0
> Environment: Ubuntu 14.04 LTS / x86_64 / 16GB RAM
> Reporter: Anup Halarnkar
>
> Command to build and test:
> mvn clean install -X
> JAVA_TOOL_OPTIONS: -Xmx4G -XX:MaxPermSize=4G -Xms1G
> Failure in tests:
> Results :
> Failed tests:
>
> TestServerSideScanMetricsFromClientSide.testRowsSeenMetricWithAsync:161->testRowsSeenMetric:174->testRowsSeenMetric:204->testMetric:330
> Metric: ROWS_SCANNED Expected: 9 Actual: 8 expected:<9> but was:<8>
>
> TestRecoveredEdits.testReplayWorksThoughLotsOfFlushing:78->testReplayWorksWithMemoryCompactionPolicy:149->verifyAllEditsMadeItIn:195
> Failed to find
> W\xE1X\xDBv\xD8}\x07\xBF\xC1I\xF1\xF5\xB9\x84\xD8/meta:prev/1422491946444/Put/vlen=16/seqid=0
> Tests run: 1761, Failures: 2, Errors: 0, Skipped: 6
> ----------------------------------------------------------------------------------------
> This is the output for 1st test failure:
> -------------------------------------------------------------------------------
> Test set: org.apache.hadoop.hbase.TestServerSideScanMetricsFromClientSide
> -------------------------------------------------------------------------------
> Tests run: 3, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 7.971 sec <<<
> FAILURE! - in org.apache.hadoop.hbase.TestServerSideScanMetricsFromClientSide
> testRowsSeenMetricWithAsync(org.apache.hadoop.hbase.TestServerSideScanMetricsFromClientSide)
> Time elapsed: 1.134 sec <<< FAILURE!
> java.lang.AssertionError: Metric: ROWS_SCANNED Expected: 9 Actual: 8
> expected:<9> but was:<8>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:834)
> at org.junit.Assert.assertEquals(Assert.java:645)
> at
> org.apache.hadoop.hbase.TestServerSideScanMetricsFromClientSide.testMetric(TestServerSideScanMetricsFromClientSide.java:330)
> at
> org.apache.hadoop.hbase.TestServerSideScanMetricsFromClientSide.testRowsSeenMetric(TestServerSideScanMetricsFromClientSide.java:204)
> at
> org.apache.hadoop.hbase.TestServerSideScanMetricsFromClientSide.testRowsSeenMetric(TestServerSideScanMetricsFromClientSide.java:174)
> at
> org.apache.hadoop.hbase.TestServerSideScanMetricsFromClientSide.testRowsSeenMetricWithAsync(TestServerSideScanMetricsFromClientSide.java:161)
> ------------------------------------------------------------------------------------
> This is output of 2nd test failure:
> -------------------------------------------------------------------------------
> Test set: org.apache.hadoop.hbase.regionserver.TestRecoveredEdits
> -------------------------------------------------------------------------------
> Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 11.911 sec
> <<< FAILURE! - in org.apache.hadoop.hbase.regionserver.TestRecoveredEdits
> testReplayWorksThoughLotsOfFlushing(org.apache.hadoop.hbase.regionserver.TestRecoveredEdits)
> Time elapsed: 11.871 sec <<< FAILURE!
> java.lang.AssertionError: Failed to find
> W\xE1X\xDBv\xD8}\x07\xBF\xC1I\xF1\xF5\xB9\x84\xD8/meta:prev/1422491946444/Put/vlen=16/seqid=0
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at
> org.apache.hadoop.hbase.regionserver.TestRecoveredEdits.verifyAllEditsMadeItIn(TestRecoveredEdits.java:195)
> at
> org.apache.hadoop.hbase.regionserver.TestRecoveredEdits.testReplayWorksWithMemoryCompactionPolicy(TestRecoveredEdits.java:149)
> at
> org.apache.hadoop.hbase.regionserver.TestRecoveredEdits.testReplayWorksThoughLotsOfFlushing(TestRecoveredEdits.java:78)
> Please let me know if you need more information
> Thanks,
> Anup
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