[ 
https://issues.apache.org/jira/browse/HBASE-14843?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15013789#comment-15013789
 ] 

stack commented on HBASE-14843:
-------------------------------

Yeah, I was going to file an issue because it happened three times in quick 
succession. Was waiting for it to fail again before filing because usually it 
passes. Here is what I had written up to add to your description [~chenheng]

Failed here:

org.apache.hadoop.hbase.procedure2.store.wal.TestWALProcedureStore.testLoad

Failing for the past 1 build (Since Failed#380 )
Took 1.3 sec.
add description
Error Message

expected:<3> but was:<0>
Stacktrace

java.lang.AssertionError: expected:<3> but was:<0>
        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.junit.Assert.assertEquals(Assert.java:631)
        at 
org.apache.hadoop.hbase.procedure2.store.wal.TestWALProcedureStore.verifyProcIdsOnRestart(TestWALProcedureStore.java:439)
        at 
org.apache.hadoop.hbase.procedure2.store.wal.TestWALProcedureStore.testLoad(TestWALProcedureStore.java:158)
Standard Output

log4j:WARN No appenders could be found for logger 
(org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more 
info.
map 0
isUpdated true
isEmpty true
Standard Error

log4j:WARN No appenders could be found for logger 
(org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more 
info.

https://builds.apache.org/view/H-L/view/HBase/job/HBase-1.2/380/jdk=latest1.8,label=Hadoop/testReport/junit/org.apache.hadoop.hbase.procedure2.store.wal/TestWALProcedureStore/testLoad/

Usually it passes on 1.2: 
https://builds.apache.org/view/H-L/view/HBase/job/HBase-1.2/380/jdk=latest1.8,label=Hadoop/testReport/junit/org.apache.hadoop.hbase.procedure2.store.wal/TestWALProcedureStore/testLoad/history/

Failed on 1.3 around same time:

org.apache.hadoop.hbase.procedure2.store.wal.TestWALProcedureStore.testLoad

Failing for the past 1 build (Since Failed#375 )
Took 1.1 sec.
add description
Error Message

expected:<3> but was:<0>
Stacktrace

java.lang.AssertionError: expected:<3> but was:<0>
        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.junit.Assert.assertEquals(Assert.java:631)
        at 
org.apache.hadoop.hbase.procedure2.store.wal.TestWALProcedureStore.verifyProcIdsOnRestart(TestWALProcedureStore.java:439)
        at 
org.apache.hadoop.hbase.procedure2.store.wal.TestWALProcedureStore.testLoad(TestWALProcedureStore.java:158)
Standard Output

log4j:WARN No appenders could be found for logger 
(org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more 
info.
map 0
isUpdated true
isEmpty true
Standard Error

log4j:WARN No appenders could be found for logger 
(org.apache.hadoop.metrics2.lib.MutableMetricsFactory).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more 
info.


https://builds.apache.org/view/H-L/view/HBase/job/HBase-1.3/375/jdk=latest1.8,label=Hadoop/testReport/junit/org.apache.hadoop.hbase.procedure2.store.wal/TestWALProcedureStore/testLoad/

Usually it passes on 1.3 too...

https://builds.apache.org/view/H-L/view/HBase/job/HBase-1.3/375/jdk=latest1.8,label=Hadoop/testReport/junit/org.apache.hadoop.hbase.procedure2.store.wal/TestWALProcedureStore/testLoad/history/



> TestWALProcedureStore.testLoad is flakey
> ----------------------------------------
>
>                 Key: HBASE-14843
>                 URL: https://issues.apache.org/jira/browse/HBASE-14843
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 2.0.0
>            Reporter: Heng Chen
>
> I see it twice recently, 
> see.
> https://builds.apache.org/job/PreCommit-HBASE-Build/16589//testReport/org.apache.hadoop.hbase.procedure2.store.wal/TestWALProcedureStore/testLoad/
> https://builds.apache.org/job/PreCommit-HBASE-Build/16532/testReport/org.apache.hadoop.hbase.procedure2.store.wal/TestWALProcedureStore/testLoad/
> Let's see what's happening.



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