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Date: Tue, 9 Oct 2012 17:40:02 +0000 (UTC)
From: "Travis Crawford (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (HIVE-2585) Collapse hive.metastore.uris and
 hive.metastore.local
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    [ https://issues.apache.org/jira/browse/HIVE-2585?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13472578#comment-13472578 ] 

Travis Crawford commented on HIVE-2585:
---------------------------------------

I started seeing this error message in my logs, and when investigating believe there's an issue here. AFAICT, if you set {{hive.metastore.uris}} you will ALWAYS see this error.

The reason is {{javax.jdo.option.ConnectionURL}} has a default value and will never be null. I set this property in {{hive-site.xml}} and walked through the configuration loading in a debugger. If the value is not empty it takes effect, and is ignored if empty.

Since {{javax.jdo.option.ConnectionURL}} has a default and cannot be unset, this warning will always be printed if someone sets {{hive.metastore.uris}}.

Before diving into possible solutions, [~ashutoshc] & [~appodictic] can you confirm this is an issue, or clarify how to correctly configure this? If this is a user error I can post a patch clarifying the error message so others that see this message will know what to do.

{code}
<property>
  <name>javax.jdo.option.ConnectionURL</name>
  <value></value>
</property>
{code}

{code}
+    if (null != this.get(ConfVars.METASTOREURIS.varname, null) &&
+        null != this.get(ConfVars.METASTORECONNECTURLKEY.varname, null)) {
+      l4j.error("Found both " + ConfVars.METASTOREURIS.varname + " and " +
+        ConfVars.METASTORECONNECTURLKEY + " Recommended to have exactly one of those config key" +
+        "in configuration");
+    }
{code}
                
> Collapse hive.metastore.uris and hive.metastore.local
> -----------------------------------------------------
>
>                 Key: HIVE-2585
>                 URL: https://issues.apache.org/jira/browse/HIVE-2585
>             Project: Hive
>          Issue Type: Improvement
>          Components: Metastore
>            Reporter: Ashutosh Chauhan
>            Assignee: Ashutosh Chauhan
>             Fix For: 0.10.0
>
>         Attachments: ASF.LICENSE.NOT.GRANTED--HIVE-2585.D2559.1.patch, ASF.LICENSE.NOT.GRANTED--HIVE-2585.D2559.2.patch, hive-2585_3.patch
>
>
> We should just have hive.metastore.uris. If it is empty, we shall assume local mode, if non-empty we shall use that string to connect to remote metastore. Having two different keys for same information is confusing.

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