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https://issues.apache.org/jira/browse/HADOOP-12522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arpit Agarwal updated HADOOP-12522:
-----------------------------------
Assignee: (was: Arpit Agarwal)
> Simplify adding NN service RPC port to an existing HA cluster with ZKFCs
> ------------------------------------------------------------------------
>
> Key: HADOOP-12522
> URL: https://issues.apache.org/jira/browse/HADOOP-12522
> Project: Hadoop Common
> Issue Type: Bug
> Components: ha
> Affects Versions: 2.7.1
> Reporter: Arpit Agarwal
>
> ZKFCs fail the following check in {{DFSZKFailoverController#dataToTarget}} if
> an NN service RPC port is added to an existing cluster.
> {code}
> protected HAServiceTarget dataToTarget(byte[] data) {
> ...
> if (!addressFromProtobuf.equals(ret.getAddress())) {
> throw new RuntimeException("Mismatched address stored in ZK for " +
> ret + ": Stored protobuf was " + proto + ", address from our own " +
> "configuration for this NameNode was " + ret.getAddress());
> }
> {code}
> The NN address stored in the znode had the common client+service RPC port
> number whereas the configuration now returns an address with the service RPC
> port. The workaround is to reformat the ZKFC state in ZK with {{hdfs zkfc
> -formatZK}}.
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