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https://issues.apache.org/jira/browse/HBASE-26021?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17370439#comment-17370439
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Viraj Jasani commented on HBASE-26021:
--------------------------------------
{quote}Coming to the fix, isn't the patch incomplete ? If we just serialize HTD
instead of TD (=HTD + table state), there is loss of information, right?
{quote}
Yes that is correct. Within HBase 1, this is possible. Since I was focusing on
HBase 1 to 2 testing, table state was not a concern for my testing. But yes,
this is not a proper fix. We will need proper revert backports (after
identifying which all reverts are applicable in branch-1) because table state
is lost in HBase 1 without fixing this.
> HBase 1.7 to 2.4 upgrade issue due to incompatible deserialization
> ------------------------------------------------------------------
>
> Key: HBASE-26021
> URL: https://issues.apache.org/jira/browse/HBASE-26021
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.7.0, 2.4.4
> Reporter: Viraj Jasani
> Priority: Major
> Attachments: Screenshot 2021-06-22 at 12.54.21 PM.png, Screenshot
> 2021-06-22 at 12.54.30 PM.png
>
>
> As of today, if we bring up HBase cluster using branch-1 and upgrade to
> branch-2.4, we are facing issue while parsing namespace from HDFS fileinfo.
> Instead of "*hbase:meta*" and "*hbase:namespace*", parsing using ProtobufUtil
> seems to be producing "*\n hbase meta*" and "*\n hbase namespace*"
> {code:java}
> 2021-06-22 00:05:56,611 INFO
> [RpcServer.priority.RWQ.Fifo.read.handler=3,queue=1,port=16025]
> regionserver.RSRpcServices: Open hbase:meta,,1.1588230740
> 2021-06-22 00:05:56,648 INFO
> [RpcServer.priority.RWQ.Fifo.read.handler=5,queue=1,port=16025]
> regionserver.RSRpcServices: Open
> hbase:namespace,,1624297762817.396cb6cc00cd4334cb1ea3a792d7529a.
> 2021-06-22 00:05:56,759 ERROR
> [RpcServer.priority.RWQ.Fifo.read.handler=5,queue=1,port=16025]
> ipc.RpcServer: Unexpected throwable object
> java.lang.IllegalArgumentException: Illegal character <
> > at 0. Namespaces may only contain 'alphanumeric characters' from any
> > language and digits:
> ^Ehbase^R namespace
> at
> org.apache.hadoop.hbase.TableName.isLegalNamespaceName(TableName.java:246)
> at
> org.apache.hadoop.hbase.TableName.isLegalNamespaceName(TableName.java:220)
> at org.apache.hadoop.hbase.TableName.<init>(TableName.java:348)
> at
> org.apache.hadoop.hbase.TableName.createTableNameIfNecessary(TableName.java:385)
> at org.apache.hadoop.hbase.TableName.valueOf(TableName.java:508)
> at
> org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.toTableName(ProtobufUtil.java:2292)
> at
> org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.toTableDescriptor(ProtobufUtil.java:2937)
> at
> org.apache.hadoop.hbase.client.TableDescriptorBuilder$ModifyableTableDescriptor.parseFrom(TableDescriptorBuilder.java:1625)
> at
> org.apache.hadoop.hbase.client.TableDescriptorBuilder$ModifyableTableDescriptor.access$200(TableDescriptorBuilder.java:597)
> at
> org.apache.hadoop.hbase.client.TableDescriptorBuilder.parseFrom(TableDescriptorBuilder.java:320)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.readTableDescriptor(FSTableDescriptors.java:511)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.getTableDescriptorFromFs(FSTableDescriptors.java:496)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.getTableDescriptorFromFs(FSTableDescriptors.java:482)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.get(FSTableDescriptors.java:210)
> at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.openRegion(RSRpcServices.java:2112)
> at
> org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos$AdminService$2.callBlockingMethod(AdminProtos.java:35218)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:395)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:338)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:318)
> 2021-06-22 00:05:56,759 ERROR
> [RpcServer.priority.RWQ.Fifo.read.handler=3,queue=1,port=16025]
> ipc.RpcServer: Unexpected throwable object
> java.lang.IllegalArgumentException: Illegal character <
> > at 0. Namespaces may only contain 'alphanumeric characters' from any
> > language and digits:
> ^Ehbase^R^Dmeta
> at
> org.apache.hadoop.hbase.TableName.isLegalNamespaceName(TableName.java:246)
> at
> org.apache.hadoop.hbase.TableName.isLegalNamespaceName(TableName.java:220)
> at org.apache.hadoop.hbase.TableName.<init>(TableName.java:348)
> at
> org.apache.hadoop.hbase.TableName.createTableNameIfNecessary(TableName.java:385)
> at org.apache.hadoop.hbase.TableName.valueOf(TableName.java:508)
> at
> org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.toTableName(ProtobufUtil.java:2292)
> at
> org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil.toTableDescriptor(ProtobufUtil.java:2937)
> at
> org.apache.hadoop.hbase.client.TableDescriptorBuilder$ModifyableTableDescriptor.parseFrom(TableDescriptorBuilder.java:1625)
> at
> org.apache.hadoop.hbase.client.TableDescriptorBuilder$ModifyableTableDescriptor.access$200(TableDescriptorBuilder.java:597)
> at
> org.apache.hadoop.hbase.client.TableDescriptorBuilder.parseFrom(TableDescriptorBuilder.java:320)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.readTableDescriptor(FSTableDescriptors.java:511)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.getTableDescriptorFromFs(FSTableDescriptors.java:496)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.getTableDescriptorFromFs(FSTableDescriptors.java:482)
> at
> org.apache.hadoop.hbase.util.FSTableDescriptors.get(FSTableDescriptors.java:210)
> at
> org.apache.hadoop.hbase.regionserver.RSRpcServices.openRegion(RSRpcServices.java:2112)
> at
> org.apache.hadoop.hbase.shaded.protobuf.generated.AdminProtos$AdminService$2.callBlockingMethod(AdminProtos.java:35218)
> at org.apache.hadoop.hbase.ipc.RpcServer.call(RpcServer.java:395)
> at org.apache.hadoop.hbase.ipc.CallRunner.run(CallRunner.java:133)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:338)
> at
> org.apache.hadoop.hbase.ipc.RpcExecutor$Handler.run(RpcExecutor.java:318){code}
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