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https://issues.apache.org/jira/browse/HBASE-22607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16994590#comment-16994590
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AK97 edited comment on HBASE-22607 at 12/12/19 12:09 PM:
---------------------------------------------------------

I was trying to build Apache Hbase on rhel_7.6/ppc64le. The build passed, 
however it generated a test failure in 
org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster i.e connection 
refused.

So, i used the patch mentioned above HBASE-22607.002.patch

However, i am getting the following errors now:

[ERROR] 
testSnapshotWithRefsExportFileSystemState(org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster)
 Time elapsed: 3.989 s <<< ERROR!
 java.lang.IllegalArgumentException: Wrong FS: 
[file:/hbase/hbase-mapreduce/target/test-data/35120b7a-8ae0-1738-09a2-497820fe4ff9/.hbase-snapshot/tableWithRefsV1|file://hbase/hbase-mapreduce/target/test-data/35120b7a-8ae0-1738-09a2-497820fe4ff9/.hbase-snapshot/tableWithRefsV1],
 expected: hdfs://localhost:35345
 at 
org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster.testSnapshotWithRefsExportFileSystemState(TestExportSnapshotNoCluster.java:110)
 at 
org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster.testSnapshotWithRefsExportFileSystemState(TestExportSnapshotNoCluster.java:90)

 

I am on branch rel/2.2.0

{color:#172b4d}Would like some help on understanding the cause for the same . I 
am running it on a High end VM with good connectivity.{color}


was (Author: ak2019):
I was trying to build Apache Hbase on rhel_7.6/ppc64le. The build passed, 
however it generated a test failure in 
org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster i.e connection 
refused.

So, i used the patch mentioned above HBASE-22607.002.patch.

However, i am getting the following errors now:


[ERROR] 
testSnapshotWithRefsExportFileSystemState(org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster)
 Time elapsed: 3.989 s <<< ERROR!
java.lang.IllegalArgumentException: Wrong FS: 
file:/hbase/hbase-mapreduce/target/test-data/35120b7a-8ae0-1738-09a2-497820fe4ff9/.hbase-snapshot/tableWithRefsV1,
 expected: hdfs://localhost:35345
 at 
org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster.testSnapshotWithRefsExportFileSystemState(TestExportSnapshotNoCluster.java:110)
 at 
org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster.testSnapshotWithRefsExportFileSystemState(TestExportSnapshotNoCluster.java:90)

 

I am on branch rel/2.2.0

{color:#172b4d}Would like some help on understanding the cause for the same . I 
am running it on a High end VM with good connectivity.{color}

> TestExportSnapshotNoCluster::testSnapshotWithRefsExportFileSystemState() 
> fails intermittently
> ---------------------------------------------------------------------------------------------
>
>                 Key: HBASE-22607
>                 URL: https://issues.apache.org/jira/browse/HBASE-22607
>             Project: HBase
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 3.0.0, 2.2.0, 2.0.6
>            Reporter: Mingliang Liu
>            Assignee: Mingliang Liu
>            Priority: Major
>             Fix For: 3.0.0, 2.3.0, 2.2.3, 2.1.9
>
>         Attachments: HBASE-22607.000.patch, HBASE-22607.001.patch, 
> HBASE-22607.002.patch
>
>
> In previous runs, test 
> {{TestExportSnapshotNoCluster.testSnapshotWithRefsExportFileSystemState}} 
> fails intermittently with {{java.net.ConnectException: Connection refused}} 
> exception, see build 
> [510|https://builds.apache.org/job/PreCommit-HBASE-Build/510/testReport/org.apache.hadoop.hbase.snapshot/TestExportSnapshotNoCluster/testSnapshotWithRefsExportFileSystemState/],
>  
> [545|https://builds.apache.org/job/PreCommit-HBASE-Build/545/testReport/org.apache.hadoop.hbase.snapshot/TestExportSnapshotNoCluster/testSnapshotWithRefsExportFileSystemState/],
>  and 
> [556|https://builds.apache.org/job/PreCommit-HBASE-Build/556/testReport/org.apache.hadoop.hbase.snapshot/TestExportSnapshotNoCluster/testSnapshotWithRefsExportFileSystemState/].
> So one sample exception is like:
> {quote}
> at 
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:155)
>       at 
> org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
>       at 
> org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:346)
>       at com.sun.proxy.$Proxy20.getListing(Unknown Source)
>       at org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1630)
>       at org.apache.hadoop.hdfs.DFSClient.listPaths(DFSClient.java:1614)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem.listStatusInternal(DistributedFileSystem.java:900)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem.access$600(DistributedFileSystem.java:114)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:964)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem$22.doCall(DistributedFileSystem.java:961)
>       at 
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
>       at 
> org.apache.hadoop.hdfs.DistributedFileSystem.listStatus(DistributedFileSystem.java:961)
>       at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1537)
>       at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1580)
>       at 
> org.apache.hadoop.hbase.util.CommonFSUtils.listStatus(CommonFSUtils.java:693)
>       at 
> org.apache.hadoop.hbase.util.FSTableDescriptors.getCurrentTableInfoStatus(FSTableDescriptors.java:448)
>       at 
> org.apache.hadoop.hbase.util.FSTableDescriptors.getTableInfoPath(FSTableDescriptors.java:429)
>       at 
> org.apache.hadoop.hbase.util.FSTableDescriptors.getTableInfoPath(FSTableDescriptors.java:410)
>       at 
> org.apache.hadoop.hbase.util.FSTableDescriptors.createTableDescriptorForTableDirectory(FSTableDescriptors.java:763)
>       at 
> org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils$SnapshotMock.createTable(SnapshotTestingUtils.java:675)
>       at 
> org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils$SnapshotMock.createSnapshot(SnapshotTestingUtils.java:653)
>       at 
> org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils$SnapshotMock.createSnapshot(SnapshotTestingUtils.java:647)
>       at 
> org.apache.hadoop.hbase.snapshot.SnapshotTestingUtils$SnapshotMock.createSnapshotV2(SnapshotTestingUtils.java:637)
>       at 
> org.apache.hadoop.hbase.snapshot.TestExportSnapshotNoCluster.testSnapshotWithRefsExportFileSystemState(TestExportSnapshotNoCluster.java:80)
> {quote}
> This seems that, somehow the rootdir filesystem is not LocalFileSystem, but 
> on HDFS. I have not dig deeper why this happens since it's failing 
> intermittently and I can not reproduce it locally. Since this is testing 
> export snapshot tool without cluster, we can enforce it using 
> LocalFileSystem; no breaking change.



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