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https://issues.apache.org/jira/browse/HBASE-20145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16437565#comment-16437565
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Artem Ervits edited comment on HBASE-20145 at 4/13/18 5:10 PM:
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I just got the same issue and can confirm that it's mixing jars on the classpath
{code:java}
/opt/hbase/hbase-2.0.0/lib/hadoop-annotations-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-auth-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-client-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-common-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-common-2.7.4-tests.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-distcp-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-hdfs-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-hdfs-2.7.4-tests.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-app-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-common-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-core-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-hs-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-jobclient-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-shuffle-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-minicluster-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-yarn-api-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-yarn-client-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-yarn-common-2.7.4.jar{code}
the key issue for me was omission of -Dhadoop.profile=3.0 as the stackoverflow 
article by [~rohithsharma] specifies. I only used -Dhadoop.version=3.1.0.


was (Author: dbist13):
I just got the same issue and can confirm that it's mixing jars on the classpath
{code:java}
/opt/hbase/hbase-2.0.0/lib/hadoop-annotations-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-auth-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-client-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-common-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-common-2.7.4-tests.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-distcp-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-hdfs-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-hdfs-2.7.4-tests.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-app-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-common-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-core-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-hs-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-jobclient-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-mapreduce-client-shuffle-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-minicluster-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-yarn-api-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-yarn-client-2.7.4.jar:/opt/hbase/hbase-2.0.0/lib/hadoop-yarn-common-2.7.4.jar{code}

> HMaster start fails with IllegalStateException when HADOOP_HOME is set
> ----------------------------------------------------------------------
>
>                 Key: HBASE-20145
>                 URL: https://issues.apache.org/jira/browse/HBASE-20145
>             Project: HBase
>          Issue Type: Bug
>         Environment: HBase-2.0-beta1.
> Hadoop trunk version.
> java version "1.8.0_144"
>            Reporter: Rohith Sharma K S
>            Assignee: Wei-Chiu Chuang
>            Priority: Critical
>
> It is observed that HMaster start is failed when HADOOP_HOME is set as env 
> while starting HMaster. HADOOP_HOME is pointing to Hadoop trunk version.
> {noformat}
> 2018-03-07 16:59:52,654 ERROR [master//10.200.4.200:16000] master.HMaster: 
> Failed to become active master
> java.lang.IllegalStateException: The procedure WAL relies on the ability to 
> hsync for proper operation during component failures, but the underlying 
> filesystem does not support doing so. Please check the config value of 
> 'hbase.procedure.store.wal.use.hsync' to set the desired level of robustness 
> and ensure the config value of 'hbase.wal.dir' points to a FileSystem mount 
> that can provide it.
>     at 
> org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore.rollWriter(WALProcedureStore.java:1036)
>     at 
> org.apache.hadoop.hbase.procedure2.store.wal.WALProcedureStore.recoverLease(WALProcedureStore.java:374)
>     at 
> org.apache.hadoop.hbase.procedure2.ProcedureExecutor.start(ProcedureExecutor.java:532)
>     at 
> org.apache.hadoop.hbase.master.HMaster.startProcedureExecutor(HMaster.java:1232)
>     at 
> org.apache.hadoop.hbase.master.HMaster.startServiceThreads(HMaster.java:1145)
>     at 
> org.apache.hadoop.hbase.master.HMaster.finishActiveMasterInitialization(HMaster.java:837)
>     at 
> org.apache.hadoop.hbase.master.HMaster.startActiveMasterManager(HMaster.java:2026)
>     at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:547)
>     at java.lang.Thread.run(Thread.java:748)
> {noformat}
> The same configs is working in HBase-1.2.6 build properly. 



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