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https://issues.apache.org/jira/browse/HIVE-22428?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16981295#comment-16981295
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Ashutosh Bapat commented on HIVE-22428:
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[~belugabehr],
That's true, however, that DEBUG is printed on the previous line and not on the
line where "Thread Stack Trace ..." is printed. Since outputs from different
threads can be intermingled, usually the two consecutive lines are not
associated with each other.
> Remove superfluous "Failed to get database" WARN Logging in ObjectStore
> -----------------------------------------------------------------------
>
> Key: HIVE-22428
> URL: https://issues.apache.org/jira/browse/HIVE-22428
> Project: Hive
> Issue Type: Improvement
> Components: Standalone Metastore
> Affects Versions: 3.2.0
> Reporter: David Mollitor
> Assignee: David Mollitor
> Priority: Major
> Fix For: 4.0.0
>
> Attachments: HIVE-22428.1.patch
>
>
> In my testing, I get lots of logs like this:
> {code:none}
> Line 26319: 2019-10-28T21:09:52,134 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.compdb, returning
> NoSuchObjectException
> Line 26327: 2019-10-28T21:09:52,135 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.compdb, returning
> NoSuchObjectException
> Line 26504: 2019-10-28T21:09:52,600 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.tstatsfast, returning
> NoSuchObjectException
> Line 26519: 2019-10-28T21:09:52,606 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.tstatsfast, returning
> NoSuchObjectException
> Line 26695: 2019-10-28T21:09:52,922 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.createDb, returning
> NoSuchObjectException
> Line 26703: 2019-10-28T21:09:52,923 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.createDb, returning
> NoSuchObjectException
> Line 26763: 2019-10-28T21:09:52,936 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.compdb, returning
> NoSuchObjectException
> Line 26778: 2019-10-28T21:09:52,939 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.compdb, returning
> NoSuchObjectException
> Line 26963: 2019-10-28T21:09:53,273 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.db1, returning
> NoSuchObjectException
> Line 26978: 2019-10-28T21:09:53,276 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.db2, returning
> NoSuchObjectException
> Line 26986: 2019-10-28T21:09:53,277 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.db1, returning
> NoSuchObjectException
> Line 27018: 2019-10-28T21:09:53,300 WARN [pool-6-thread-5]
> metastore.ObjectStore: Failed to get database hive.db2, returning
> NoSuchObjectException
> {code}
> This is a superfluous log message. It might be pretty common for a database
> to not exists if, for example, a user fat-fingers the name of the database.
> The code also has the bad habit of log-and-throw. Just log or throw, not
> both.
> Since I'm looking at this class, touch up some of the other logging as well.
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