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https://issues.apache.org/jira/browse/IMPALA-9069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16956086#comment-16956086
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Zoltán Borók-Nagy edited comment on IMPALA-9069 at 10/21/19 1:29 PM:
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Thanks for you comment [~pvary]
Based on the code Hive doesn't clean the records from the 'hive_locks' table.
The method comment says
{noformat}
HIVE_LOCKS is (presumably) expected to be removed by
AcidHouseKeeperServices{noformat}
Unfortunately in my environment AcidHouseKeeperServices doesn't work for some
reason.
was (Author: boroknagyz):
Thanks for you comment [~pvary]
Based on the code Hive doesn't clean the records from the 'hive_locks'. The
method comment says
{noformat}
HIVE_LOCKS is (presumably) expected to be removed by
AcidHouseKeeperServices{noformat}
Unfortunately in my environment AcidHouseKeeperServices doesn't work for some
reason.
> Impala should acquire an ACID lock when dropping a database
> -----------------------------------------------------------
>
> Key: IMPALA-9069
> URL: https://issues.apache.org/jira/browse/IMPALA-9069
> Project: IMPALA
> Issue Type: Bug
> Reporter: Zoltán Borók-Nagy
> Assignee: Zoltán Borók-Nagy
> Priority: Major
> Labels: impala-acid
>
> Dropping a table takes an exclusive lock on the table, hence it cannot be
> removed while other queries are working on it.
> However, dropping a database doesn't take any locks, so it just starts
> removing table data even if there are locks on the table by other clients.
> Moreover, the Hive Metastore doesn't delete the locks that refer to dropped
> entities and when the database and tables are re-created those locks will be
> still around (because the locks refer to the databases and tables via their
> names).
> Impala should acquire an exclusive lock on the database during DROP.
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