[jira] [Resolved] (HBASE-11451) HBase MapReduce job loads configuration (hbase-site.xml), but actually doesn't use the values read.

["Andrew Kyle Purtell (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-11451?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrew Kyle Purtell resolved HBASE-11451.
-----------------------------------------
    Resolution: Duplicate

> HBase MapReduce job loads configuration (hbase-site.xml), but actually doesn't use the values read.
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-11451
>                 URL: https://issues.apache.org/jira/browse/HBASE-11451
>             Project: HBase
>          Issue Type: Bug
>          Components: mapreduce
>    Affects Versions: 0.96.1.1
>         Environment: Linux Debain 7.4 "Wheezy"
>            Reporter: Arun Allamsetty
>            Priority: Major
>
> I am writing a MapReduce job which reads from (a) HBase table(s). Almost everything works as it is supposed to except the {{Configuration}} class. So I did this,
> {code:java}
> Configuration config = HBaseConfiguration.create();
> GenericOptionsParser parser = new GenericOptionsParser(config, args);
> // This should work but is not working.
> config.addResource(new Path(parser.getCommandLine().getOptionValue("conf", DEFAULT_HBASE_CONF)));
> {code}
> When I run the job like this (passing the path to `hbase-site.xml` correctly), I get this error.
> {code:java}
> 14/06/30 23:02:30 WARN zookeeper.ClientCnxn: Session 0x0 for server null, unexpected error, closing socket connection and attempting reconnect
> java.net.ConnectException: Connection refused
>     at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
>     at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:735)
>     at org.apache.zookeeper.ClientCnxnSocketNIO.doTransport(ClientCnxnSocketNIO.java:350)
>     at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1075)
>     14/06/30 23:02:30 INFO zookeeper.ClientCnxn: Opening socket connection to server localhost/127.0.0.1:2181. Will not attempt to authenticate using SASL (unknown error)
> {code}
> But when I add the following two lines, it works like a charm (even though it seems completely ridiculous).
> {code:java}
> // So these are the workarounds.
> config.set("hbase.rootdir", config.get("hbase.rootdir"));
> config.set("hbase.zookeeper.quorum", config.get("hbase.zookeeper.quorum"));
> {code}
> Basically, read the parameters back from the {{Configuration}} object and set them back in the same object, which is bonkers.
> I read a bug raised about it [HBASE-11066|https://issues.apache.org/jira/browse/HBASE-11066], but it seems to have been closed citing local configuration problem (I think not). I use CDH 5.0.2 with HBase 0.96.1.1. 
> I don't know if it is an issue with the Cloudera build or the general one. Please let me know if you need any more details.



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