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https://issues.apache.org/jira/browse/HIVE-26967?focusedWorklogId=840390&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-840390
]
ASF GitHub Bot logged work on HIVE-26967:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 19/Jan/23 17:53
Start Date: 19/Jan/23 17:53
Worklog Time Spent: 10m
Work Description: kasakrisz opened a new pull request, #3967:
URL: https://github.com/apache/hive/pull/3967
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### What changes were proposed in this pull request?
Use DDL_SHARED write type when Materialized view stored by iceberg is
altered for enabling/disabling automatic query rewrite.
### Why are the changes needed?
Later Iceberg commit request an exclusive write lock on the MV while
updating data in metastore.
### Does this PR introduce _any_ user-facing change?
Yes, `alter materialized view <mv> [enable|disable] rewrite` not hangs and
times out.
### How was this patch tested?
```
mvn test -Dtest.output.overwrite -Dtest=TestIcebergCliDriver
-Dqfile=mv_iceberg_orc2.q -pl itests/qtest-iceberg -Piceberg -Pitests
```
Issue Time Tracking
-------------------
Worklog Id: (was: 840390)
Remaining Estimate: 0h
Time Spent: 10m
> Deadlock when enabling/disabling Materialized view stored by Iceberg
> --------------------------------------------------------------------
>
> Key: HIVE-26967
> URL: https://issues.apache.org/jira/browse/HIVE-26967
> Project: Hive
> Issue Type: Bug
> Components: Iceberg integration
> Reporter: Krisztian Kasa
> Assignee: Krisztian Kasa
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {code}
> set hive.support.concurrency=true;
> set hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager;
> create table all100k(
> t int,
> si int,
> i int,
> b bigint,
> f float,
> d double,
> s string,
> dc decimal(38,18),
> bo boolean,
> v string,
> c string,
> ts timestamp,
> dt date)
> partitioned by spec (BUCKET(16, t))
> stored by iceberg
> stored as parquet;
> create materialized view mv_rewrite stored by iceberg as select t, si from
> all100k where t>115;
> explain select si,t from all100k where t>116 and t<120;
> alter materialized view mv_rewrite disable rewrite;
> {code}
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