[jira] [Created] (HDFS-5566) HA namenode with QJM created from org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider should implement Closeable

["Henry Hung (JIRA)" <ji...@apache.org>]

Henry Hung created HDFS-5566:
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             Summary: HA namenode with QJM created from org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider should implement Closeable
                 Key: HDFS-5566
                 URL: https://issues.apache.org/jira/browse/HDFS-5566
             Project: Hadoop HDFS
          Issue Type: Bug
         Environment: hadoop-2.2.0
hbase-0.96
            Reporter: Henry Hung


When using hbase-0.96 with hadoop-2.2.0, stopping master/regionserver node will result in {{Cannot close proxy - is not Closeable or does not provide closeable invocation}}.

[Mail Archive|https://drive.google.com/file/d/0B22pkxoqCdvWSGFIaEpfR3lnT2M/edit?usp=sharing]

My hadoop-2.2.0 configured as HA namenode with QJM, the configuration is like this:
{code:xml}
  <property>
    <name>dfs.nameservices</name>
    <value>hadoopdev</value>
  </property>
  <property>
    <name>dfs.ha.namenodes.hadoopdev</name>
    <value>nn1,nn2</value>
  </property>
  <property>
    <name>dfs.namenode.rpc-address.hadoopdev.nn1</name>
    <value>fphd9.ctpilot1.com:9000</value>
  </property>
  <property>
    <name>dfs.namenode.http-address.hadoopdev.nn1</name>
    <value>fphd9.ctpilot1.com:50070</value>
  </property>
  <property>
    <name>dfs.namenode.rpc-address.hadoopdev.nn2</name>
    <value>fphd10.ctpilot1.com:9000</value>
  </property>
  <property>
    <name>dfs.namenode.http-address.hadoopdev.nn2</name>
    <value>fphd10.ctpilot1.com:50070</value>
  </property>
  <property>
    <name>dfs.namenode.shared.edits.dir</name>
    <value>qjournal://fphd8.ctpilot1.com:8485;fphd9.ctpilot1.com:8485;fphd10.ctpilot1.com:8485/hadoopdev</value>
  </property>
  <property>
    <name>dfs.client.failover.proxy.provider.hadoopdev</name>
    <value>org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider</value>
  </property>
  <property>
    <name>dfs.ha.fencing.methods</name>
    <value>shell(/bin/true)</value>
  </property>
  <property>
    <name>dfs.journalnode.edits.dir</name>
    <value>/data/hadoop/hadoop-data-2/journal</value>
  </property>
  <property>
    <name>dfs.ha.automatic-failover.enabled</name>
    <value>true</value>
  </property>
  <property>
    <name>ha.zookeeper.quorum</name>
    <value>fphd1.ctpilot1.com:2222</value>
  </property>
{code}

I traced the code and found out that when stopping the hbase master node, it will try invoke method "close" on namenode, but the instance that created from {{org.apache.hadoop.hdfs.NameNodeProxies.createProxy}} with failoverProxyProviderClass {{org.apache.hadoop.hdfs.server.namenode.ha.ConfiguredFailoverProxyProvider}} do not have the Closeable interface.

If we use the Non-HA case, the created instance will be {{org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB}} that implement Closeable.

TL;DR;
With hbase connecting to hadoop HA namenode, when stopping the hbase master or regionserver, it couldn't find the {{close}} method to gracefully close namenode session.



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