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Posted to gitbox@hive.apache.org by GitBox <gi...@apache.org> on 2021/02/25 13:52:36 UTC
[GitHub] [hive] kasakrisz opened a new pull request #2022: HIVE-24822: Materialized View rebuild loses materializationTime property value
kasakrisz opened a new pull request #2022:
URL: https://github.com/apache/hive/pull/2022
### What changes were proposed in this pull request?
Set `materializationTime` when updating `CreationMetadata` using `ObjectStore.updateCreationMetadata`
### Why are the changes needed?
When Rebuilding a MaterializedView a new `CreationMetadata` instance is created for the view which contains updated information like `ValidTxnList`. Initially this object has a `materializationTime` value with `0` and this is going to be stored in the `HiveMaterializedViewsRegistry` wrapped by the `RelOptMaterialization` object represents the view. However the `materializationTime` value stored in the MetaStore is recalculated and stored during the update hence MS and the registry has different values. This can lead unnecessary registry refresh or even `NullPointerException` as the jira explains.
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
```
mvn test -Dtest=TestObjectStore#testUpdateCreationMetadataSetsMaterializationTime -pl standalone-metastore/metastore-server
```
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[GitHub] [hive] kasakrisz merged pull request #2022: HIVE-24822: Materialized View rebuild loses materializationTime property value
Posted by GitBox <gi...@apache.org>.
kasakrisz merged pull request #2022:
URL: https://github.com/apache/hive/pull/2022
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