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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Coprocessor exception in ResionServer log
Date Tue, 11 Oct 2016 02:05:31 GMT
bq. have different Class objects for the type otobuf/Service

Was the above copied verbatim ?

I wonder why protobuf was cut off.

If you deploy through hbase.coprocessor.region.classes in hbase-site.xml,
do you still have the same error ?

Cheers

On Mon, Oct 10, 2016 at 6:43 PM, big data <bigdatabase@outlook.com> wrote:

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> [INFO] BUILD SUCCESS
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> [INFO] Total time: 5.878 s
> [INFO] Finished at: 2016-10-11T09:41:43+08:00
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>
>
> lucky, it's not too long :)
>
>
>
> 在 16/10/11 上午9:34, Ted Yu 写道:
> > Could be related to incompatible protobuf versions.
> >
> > What's the output of:
> > mvn dependency:tree
> >
> > Please pastebin it - it should be fairly long.
> >
> > On Mon, Oct 10, 2016 at 6:29 PM, big data <bigdatabase@outlook.com>
> wrote:
> >
> >> Dear all,
> >>
> >> I've created an Endpoint coprocessor, and deployed it through hbase
> shell.
> >>
> >> Then when I run client code, when code
> >>
> >> response = rpcCallback.get();
> >>
> >> rpcCallback.get() return null;
> >>
> >> in the resion server log, i found this exception:
> >>
> >> 2016-10-10 15:50:07,636 ERROR org.apache.hadoop.hbase.regionserver.
> RegionCoprocessorHost:
> >> Failed to load coprocessor AndEndPoint
> >>
> >> java.lang.LinkageError: loader constraint violation in interface itable
> >> initialization: when resolving method
> >> "AndEndPoint.getService()Lcom/google/protobuf/Service;" the class
> loader
> >> (instance of
> >> org/apache/hadoop/hbase/util/CoprocessorClassLoader) of the current
> >> class, AndEndPoint, and the class loader (instance of
> >> sun/misc/Launcher$AppClassLoader) for interface
> org/apache/hadoop/hbase/coprocessor/CoprocessorService
> >> have different Class objects for
> >> the type otobuf/Service; used in the signature
> >>
> >> Any solution to solve this problem?
> >>
> >> thanks.
> >>
> >>
> >> My pom like this:
> >>
> >> <dependency>
> >>      <groupId>org.apache.hadoop</groupId>
> >>      <artifactId>hadoop-client</artifactId>
> >>      <version>2.6.0</version>
> >> </dependency>
> >> <dependency>
> >>      <groupId>org.apache.hadoop</groupId>
> >>      <artifactId>hadoop-common</artifactId>
> >>      <version>2.6.0</version>
> >> </dependency>
> >> <dependency>
> >>      <groupId>org.apache.hbase</groupId>
> >>      <artifactId>hbase-server</artifactId>
> >>      <version>1.0.1</version>
> >> </dependency>
> >>
> >>
> >>
>
>

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