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https://issues.apache.org/jira/browse/HBASE-9177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13737031#comment-13737031
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stack commented on HBASE-9177:
------------------------------
I think we need both in case for some reason the znode makes it over the
migration... or some errant process manages to write the znode ahead of the
0.96 writer. In > 0.95 we have the PBUF preamble, right? So is it not just
that we are deserializing as though it were bytes instead of was a UTF8 String?
Thanks Rajesh.
> Cluster UUID is not properly parsable after rewriting to PB.
> ------------------------------------------------------------
>
> Key: HBASE-9177
> URL: https://issues.apache.org/jira/browse/HBASE-9177
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.0, 0.95.2
> Reporter: rajeshbabu
> Assignee: rajeshbabu
>
> I am facing this problem while testing HBASE-8348(migration).
> ->I have started two clusters with 0.94 version to replicate data from one
> cluster to other. When we have started master,writing cluster id without PB.
> -> killed both the clusters when Replication in progress
> -> running migration script to migrate hdfs and zk data to 0.96.0(No changes
> in cluster id.)
> -> starting 0.96.0 processes.
> Then not able to start region server.
> {code}
> java.io.IOException: Region server startup failed
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.convertThrowableToIOE(HRegionServer.java:2629)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1202)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:802)
> at java.lang.Thread.run(Thread.java:662)
> Caused by: java.lang.NumberFormatException: For input string: " $411f611e
> at
> java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
> at java.lang.Long.parseLong(Long.java:410)
> at java.lang.Long.valueOf(Long.java:498)
> at java.lang.Long.decode(Long.java:641)
> at java.util.UUID.fromString(UUID.java:208)
> at
> org.apache.hadoop.hbase.zookeeper.ZKClusterId.getUUIDForCluster(ZKClusterId.java:90)
> at
> org.apache.hadoop.hbase.replication.regionserver.Replication.initialize(Replication.java:127)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.newReplicationInstance(HRegionServer.java:2248)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.createNewReplicationInstance(HRegionServer.java:2219)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.setupWALAndReplication(HRegionServer.java:1423)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.handleReportForDutyResponse(HRegionServer.java:1190)
> ... 2 more
> {code}
> {code}
> try {
> clusterId = ClusterId.parseFrom(content);
> } catch (DeserializationException e) {
> throw new IOException("content=" + Bytes.toString(content), e);
> }
> // If not pb'd, make it so.
> if (!ProtobufUtil.isPBMagicPrefix(content)) rewriteAsPb(fs, rootdir,
> idPath, clusterId);
> {code}
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