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https://issues.apache.org/jira/browse/HIVE-20041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16533882#comment-16533882
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Gopal V commented on HIVE-20041:
--------------------------------
The patch is ready, will look at filing a flaky-test JIRA for the druid timeout.
{code}
2018-07-05T02:33:22,883 WARN [a1043130-e1f6-4bdc-a880-9f641efce907 main]
common.RetryUtils: Failed on try 7, retrying in 36,587ms.
org.skife.jdbi.v2.exceptions.UnableToObtainConnectionException:
java.sql.SQLException: Cannot create PoolableConnectionFactory
(java.net.ConnectException : Error connecting to server localhost on port 1,527
with message Connection refused.)
at org.skife.jdbi.v2.DBI.open(DBI.java:230)
~[hive-druid-handler-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
at org.skife.jdbi.v2.DBI.withHandle(DBI.java:279)
~[hive-druid-handler-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
at
org.apache.hive.druid.io.druid.metadata.SQLMetadataConnector$2.call(SQLMetadataConnector.java:135)
~[hive-druid-handler-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
at
org.apache.hive.druid.io.druid.java.util.common.RetryUtils.retry(RetryUtils.java:63)
[hive-druid-handler-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
at
org.apache.hive.druid.io.druid.java.util.common.RetryUtils.retry(RetryUtils.java:81)
[hive-druid-handler-4.0.0-SNAPSHOT.jar:4.0.0-SNAPSHOT]
{code}
Looks to be a derby connection failure, not an actual result failure.
> ResultsCache: Improve loggng for concurrent queries
> ---------------------------------------------------
>
> Key: HIVE-20041
> URL: https://issues.apache.org/jira/browse/HIVE-20041
> Project: Hive
> Issue Type: Improvement
> Components: Diagnosability
> Reporter: Gopal V
> Assignee: Laszlo Bodor
> Priority: Minor
> Attachments: HIVE-20041.01.patch, HIVE-20041.02.patch,
> HIVE-20041.03.patch, HIVE-20041.04.patch
>
>
> The logging for QueryResultsCache ends up printing information without
> context, like
> {code}
> 2018-06-30T17:48:45,502 INFO [HiveServer2-Background-Pool: Thread-166]
> results.QueryResultsCache: Waiting on pending cacheEntry
> {code}
> {code}
> 2018-06-30T17:50:17,963 INFO [HiveServer2-Background-Pool: Thread-145]
> ql.Driver: savedToCache: true
> {code}
> The previous lines for this are in DEBUG level, so the logging ends up being
> useless at INFO level to debug.
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