[HBASE-28526] hbase-rest client shading conflict with hbase-shaded-client in HBase 2.x

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0, 2.4.17, 2.7.0, 2.5.8
• Fix Version/s: 2.7.0, 2.6.1, 2.5.9
• Component/s: REST
• Labels: pull-request-available
• Assignee: Istvan Toth
• Reporter: Istvan Toth
• Created: 16/Apr/24 14:12
• Updated: 11/Jul/24 18:14
• Resolved: 05/Jun/24 05:08

Description

When trying to decode a protobuf encoded CellSet, I get

Exception in thread "main" java.lang.NoSuchMethodError: org.apache.hadoop.hbase.protobuf.ProtobufUtil.mergeFrom(Lcom/google/protobuf/Message$Builder;[B)V
	at org.apache.hadoop.hbase.rest.model.CellSetModel.getObjectFromMessage(CellSetModel.java:129)
	at RestClientExample.getMulti(RestClientExample.java:191)
	at RestClientExample.start(RestClientExample.java:138)
	at RestClientExample.main(RestClientExample.java:124)

Seems to be caused by relocating protobuf 2.5 in hbase-shaded-client.

It works fine with the unrelcoated client i.e. when using the

export CLASSPATH=`hbase --internal-classpath classpath`:<a few extra jars>

command to set up the classpath for the client.

Issue Links

• relates to: HBASE-28725 Use thirdparty protobuf for REST interface in HBase 2.x
• relates to: HBASE-28550 Provide working benchmark tool for REST server
• links to: GitHub Pull Request #5959