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https://issues.apache.org/jira/browse/HBASE-23833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17062943#comment-17062943
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Wei-Chiu Chuang commented on HBASE-23833:
-----------------------------------------
Thanks [~stack] for your time!
Hadoop 3.3.0 migrates to Protobuf 3.7.1.
Initially I thought, another approach to this (and perhaps easier solution), is
to ship another version of hbase-shaded-netty. The trick is to relocate the
reference of com.google.protobuf.* classes in hbase-shaded-netty to point to
org.apache.hadoop.thirdparty.protobuf.* The problem is that netty is not only
used for HBase-to-HDFS communication, but also HBase internal communication.
What you suggested makes more sense. And it's not entirely crazy (no more
crazier than the reflection hack in the whole FanOut stuff :) ) I'll study it
further.
> The relocated hadoop-thirdparty protobuf breaks HBase asyncwal
> --------------------------------------------------------------
>
> Key: HBASE-23833
> URL: https://issues.apache.org/jira/browse/HBASE-23833
> Project: HBase
> Issue Type: Bug
> Components: wal
> Affects Versions: 3.0.0
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Major
>
> Hadoop trunk (3.3.0) shaded protobuf and moved it to hadoop-thirdparty. As
> the result, hbase asyncwal fails to compile because asyncwal uses the
> Hadoop's protobuf objects.
> The following command
> {code}
> mvn clean install -Dhadoop.profile=3.0 -Dhadoop.version=3.3.0-SNAPSHOT
> {code}
> fails with the following error:
> {noformat}
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile
> (default-compile) on project hbase-server: Compilation failure: Compilation
> failure:
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputSaslHelper.java:[361,44]
> cannot access org.apache.hadoop.thirdparty.protobuf.MessageOrBuilder
> [ERROR] class file for
> org.apache.hadoop.thirdparty.protobuf.MessageOrBuilder not found
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputSaslHelper.java:[362,14]
> cannot access org.apache.hadoop.thirdparty.protobuf.GeneratedMessageV3
> [ERROR] class file for
> org.apache.hadoop.thirdparty.protobuf.GeneratedMessageV3 not found
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputSaslHelper.java:[366,16]
> cannot access org.apache.hadoop.thirdparty.protobuf.ByteString
> [ERROR] class file for org.apache.hadoop.thirdparty.protobuf.ByteString not
> found
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputSaslHelper.java:[375,12]
> cannot find symbol
> [ERROR] symbol: method
> writeDelimitedTo(org.apache.hbase.thirdparty.io.netty.buffer.ByteBufOutputStream)
> [ERROR] location: variable proto of type
> org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.DataTransferEncryptorMessageProto
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputSaslHelper.java:[702,81]
> incompatible types:
> org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.DataTransferEncryptorMessageProto
> cannot be converted to com.google.protobuf.MessageLite
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputHelper.java:[314,66]
> incompatible types:
> org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BlockOpResponseProto
> cannot be converted to com.google.protobuf.MessageLite
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputHelper.java:[330,81]
> cannot access org.apache.hadoop.thirdparty.protobuf.ProtocolMessageEnum
> [ERROR] class file for
> org.apache.hadoop.thirdparty.protobuf.ProtocolMessageEnum not found
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputHelper.java:[380,10]
> cannot find symbol
> [ERROR] symbol: method
> writeDelimitedTo(org.apache.hbase.thirdparty.io.netty.buffer.ByteBufOutputStream)
> [ERROR] location: variable proto of type
> org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpWriteBlockProto
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutputHelper.java:[422,77]
> cannot access org.apache.hadoop.thirdparty.protobuf.Descriptors
> [ERROR] class file for org.apache.hadoop.thirdparty.protobuf.Descriptors
> not found
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/io/asyncfs/FanOutOneBlockAsyncDFSOutput.java:[323,64]
> incompatible types:
> org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.PipelineAckProto
> cannot be converted to com.google.protobuf.MessageLite
> [ERROR]
> /Users/weichiu/sandbox/hbase/hbase-server/src/main/java/org/apache/hadoop/hbase/wal/SyncReplicationWALProvider.java:[209,68]
> invalid method reference
> [ERROR] non-static method get() cannot be referenced from a static context
> {noformat}
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