[jira] [Commented] (HIVE-2152) Hive throws an NPE if hive-default.xml.

["Joey Echeverria (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-2152?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13030853#comment-13030853 ] 

Joey Echeverria commented on HIVE-2152:
---------------------------------------

Also, the log file isn't much better. You'll see exceptions that look like this:

{noformat}
2011-04-25 14:23:12,384 ERROR exec.DDLTask (SessionState.java:printError(343)) - FAILED: Error in metadata: java.lang.NullPointerException
org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.NullPointerException
	at org.apache.hadoop.hive.ql.metadata.Hive.getDatabase(Hive.java:1028)
	at org.apache.hadoop.hive.ql.metadata.Hive.databaseExists(Hive.java:1013)
	at org.apache.hadoop.hive.ql.exec.DDLTask.showTables(DDLTask.java:1691)
	at org.apache.hadoop.hive.ql.exec.DDLTask.execute(DDLTask.java:289)
	at org.apache.hadoop.hive.ql.exec.Task.executeTask(Task.java:130)
	at org.apache.hadoop.hive.ql.exec.TaskRunner.runSequential(TaskRunner.java:57)
	at org.apache.hadoop.hive.ql.Driver.launchTask(Driver.java:1063)
	at org.apache.hadoop.hive.ql.Driver.execute(Driver.java:900)
	at org.apache.hadoop.hive.ql.Driver.run(Driver.java:748)
	at org.apache.hadoop.hive.cli.CliDriver.processCmd(CliDriver.java:164)
	at org.apache.hadoop.hive.cli.CliDriver.processLine(CliDriver.java:241)
	at org.apache.hadoop.hive.cli.CliDriver.main(CliDriver.java:456)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.apache.hadoop.util.RunJar.main(RunJar.java:186)
Caused by: java.lang.NullPointerException
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:247)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getClass(HiveMetaStore.java:472)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.getMS(HiveMetaStore.java:354)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.executeWithRetry(HiveMetaStore.java:306)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.createDefaultDB(HiveMetaStore.java:451)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.init(HiveMetaStore.java:232)
	at org.apache.hadoop.hive.metastore.HiveMetaStore$HMSHandler.<init>(HiveMetaStore.java:197)
	at org.apache.hadoop.hive.metastore.HiveMetaStoreClient.<init>(HiveMetaStoreClient.java:108)
	at org.apache.hadoop.hive.ql.metadata.Hive.createMetaStoreClient(Hive.java:1855)
	at org.apache.hadoop.hive.ql.metadata.Hive.getMSC(Hive.java:1865)
	at org.apache.hadoop.hive.ql.metadata.Hive.getDatabase(Hive.java:1024)
	... 16 more
{noformat}

> Hive throws an NPE if hive-default.xml.
> ---------------------------------------
>
>                 Key: HIVE-2152
>                 URL: https://issues.apache.org/jira/browse/HIVE-2152
>             Project: Hive
>          Issue Type: Bug
>          Components: Diagnosability
>    Affects Versions: 0.7.0
>            Reporter: Joey Echeverria
>
> If you don't have hive-default.xml in your classpath, you get the following error when you try to show tables in the the hive shell:
> hive> show tables; 
> FAILED: Error in metadata: java.lang.NullPointerException 
> FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask
> It would be a lot more useful to print message indicating that hive-default.xml. This problem will become mute if HIVE-1530 gets accepted.

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