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https://issues.apache.org/jira/browse/HIVE-18768?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16396523#comment-16396523
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Alexander Kolbasov commented on HIVE-18768:
-------------------------------------------
Interesting - all DbNotificationListener tests in branch 3 are now failing here:
{code}
2018-03-12T20:52:22,775 ERROR [main] metastore.ObjectStore: couldnot get lock
for update
java.lang.NullPointerException: null
at
org.apache.hadoop.hive.metastore.ObjectStore.addNotificationEvent(ObjectStore.java:8888)
[hive-standalone-metastore-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT]
at
org.apache.hive.hcatalog.listener.DummyRawStoreFailEvent.addNotificationEvent(DummyRawStoreFailEvent.java:819)
[test-classes/:?]
{code}
This used to work before - I am not sure what actually changed in the test
setup. [~vihangk1] any idea?
> Use Datanucleus to serialize notification updates
> -------------------------------------------------
>
> Key: HIVE-18768
> URL: https://issues.apache.org/jira/browse/HIVE-18768
> Project: Hive
> Issue Type: Bug
> Components: Metastore
> Affects Versions: 2.0.2, 3.0.0
> Reporter: Alexander Kolbasov
> Assignee: Alexander Kolbasov
> Priority: Major
> Attachments: HIVE-18768.01.patch, HIVE-18768.02.patch
>
>
> HIVE-16886 added code to serialize notification updates using LOCK FOR
> UPDATE. It turns out that there is a simpler way - see HIVE-18526. The goal
> of this JIRA is to use the approach from HIVE-18526 - Datanucleus based
> solution.
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