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https://issues.apache.org/jira/browse/PHOENIX-6769?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17579196#comment-17579196
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Andrew Kyle Purtell commented on PHOENIX-6769:
----------------------------------------------

[~rushabh.shah] It would be good to make this change out in open source and 
then pick it back into our internal version.

I'm out for two weeks on vacation starting basically now. I can pick this up 
when back at the end of the month if nobody has tackled it in the meantime, but 
it is not difficult... See OMID-226 for an example of how to accomplish it.

> Unit tests failing with IncompatibleClassChangeError
> ----------------------------------------------------
>
>                 Key: PHOENIX-6769
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-6769
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.3.0
>            Reporter: Andrew Kyle Purtell
>            Priority: Major
>             Fix For: 5.3.0
>
>
> There is a well known incompatibility between old versions of mockito-all and 
> mockito-core and newer versions. I'm not exactly sure what the trigger was, 
> perhaps PHOENIX-6753, but tests fail for me when run locally exhibiting the 
> classic symptom of this problem.
> The fix is to align your use of mockito (mockito-core) with downstreamers. 
> HBase uses mockito-core 2.28.2 on branch-2.4 and branch-2.5. (Phoenix is on 
> 1.10.19.) I checked Hadoop branch-3.3 and it's also on 2.28.2.
> I recently opened a PR for OMID-226 to fix the same problem in phoenix-omid. 
> For example
> {noformat}
> ERROR] 
> org.apache.phoenix.hbase.index.write.recovery.TestPerRegionIndexWriteCache.testMultipleAddsForSingleRegion
>   Time elapsed: 0.035 s  <<< ERROR!
> java.lang.IncompatibleClassChangeError: Found interface 
> org.apache.hadoop.hdfs.protocol.HdfsFileStatus, but class was expected
>       at 
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper.createOutput(FanOutOneBlockAsyncDFSOutputHelper.java:535)
>       at 
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper.access$400(FanOutOneBlockAsyncDFSOutputHelper.java:112)
>       at 
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper$8.doCall(FanOutOneBlockAsyncDFSOutputHelper.java:615)
>       at 
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper$8.doCall(FanOutOneBlockAsyncDFSOutputHelper.java:610)
>       at 
> org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
>       at 
> org.apache.hadoop.hbase.io.asyncfs.FanOutOneBlockAsyncDFSOutputHelper.createOutput(FanOutOneBlockAsyncDFSOutputHelper.java:623)
>       at 
> org.apache.hadoop.hbase.io.asyncfs.AsyncFSOutputHelper.createOutput(AsyncFSOutputHelper.java:53)
>       at 
> org.apache.hadoop.hbase.regionserver.wal.AsyncProtobufLogWriter.initOutput(AsyncProtobufLogWriter.java:190)
>       at 
> org.apache.hadoop.hbase.regionserver.wal.AbstractProtobufLogWriter.init(AbstractProtobufLogWriter.java:160)
>       at 
> org.apache.hadoop.hbase.wal.AsyncFSWALProvider.createAsyncWriter(AsyncFSWALProvider.java:116)
>       at 
> org.apache.hadoop.hbase.regionserver.wal.AsyncFSWAL.createWriterInstance(AsyncFSWAL.java:723)
>       at 
> org.apache.hadoop.hbase.regionserver.wal.AsyncFSWAL.createWriterInstance(AsyncFSWAL.java:129)
>       at 
> org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL.rollWriter(AbstractFSWAL.java:833)
>       at 
> org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL.rollWriter(AbstractFSWAL.java:547)
>       at 
> org.apache.hadoop.hbase.regionserver.wal.AbstractFSWAL.init(AbstractFSWAL.java:488)
>       at 
> org.apache.hadoop.hbase.wal.AbstractFSWALProvider.getWAL(AbstractFSWALProvider.java:160)
>       at 
> org.apache.hadoop.hbase.wal.AbstractFSWALProvider.getWAL(AbstractFSWALProvider.java:62)
>       at org.apache.hadoop.hbase.wal.WALFactory.getWAL(WALFactory.java:295)
>       at 
> org.apache.phoenix.hbase.index.write.recovery.TestPerRegionIndexWriteCache.setUp(TestPerRegionIndexWriteCache.java:109)
> {noformat}



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