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Posted to issues@hbase.apache.org by "Jimmy Xiang (JIRA)" <ji...@apache.org> on 2014/06/01 06:23:01 UTC

[jira] [Commented] (HBASE-11279) Block cache could be disabled by mistake

    [ https://issues.apache.org/jira/browse/HBASE-11279?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14014902#comment-14014902 ] 

Jimmy Xiang commented on HBASE-11279:
-------------------------------------

Log shows 2014-05-31 14:49:16,075 INFO  [pool-1-thread-1] hfile.CacheConfig(275): CacheConfig:disabled

> Block cache could be disabled by mistake
> ----------------------------------------
>
>                 Key: HBASE-11279
>                 URL: https://issues.apache.org/jira/browse/HBASE-11279
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>
> There is a weird test failure:
> {noformat}
> java.lang.AssertionError
> 	at org.junit.Assert.fail(Assert.java:86)
> 	at org.junit.Assert.assertTrue(Assert.java:41)
> 	at org.junit.Assert.assertTrue(Assert.java:52)
> 	at org.apache.hadoop.hbase.io.hfile.TestPrefetch.readStoreFile(TestPrefetch.java:96)
> 	at org.apache.hadoop.hbase.io.hfile.TestPrefetch.testPrefetch(TestPrefetch.java:66)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:606)
> 	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
> 	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
> 	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
> 	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
> 	at org.junit.internal.runners.statements.FailOnTimeout$StatementThread.run(FailOnTimeout.java:74)
> {noformat}
> Looked into it, and found it could be because CacheConfig tries to compare a float with a long. Probably we should do this instead:
> {noformat}
> -    if (cachePercentage == 0L) {
> +    if (cachePercentage <= 0.0001f) {
> {noformat}



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