# Amazon EMR 7.4.0 - Hive release notes
7.4.0 release notes

## Amazon EMR 7.4.0 - Hive changes
Hive changes


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| Type | Description | 
| --- | --- | 
| Upgrade | [HIVE-28191](https://issues.apache.org/jira/browse/HIVE-28191): Upgrade Hadoop Version to 3.4.0 | 
| Upgrade |  Upgrade hadoop shaded protobuf to 3.21 | 
| Upgrade | Upgrade commons-cli to 1.5.0 | 
| Upgrade | Upgrade commons-compress to 1.24.0 | 
| Upgrade | Upgrade commons-io to 2.14.0 | 
| Upgrade | Upgrade commons-lang3 to 3.21.0 | 
| Improvement | Change time to wait for Tez session to be opened while trying to use the existing session in HiveCLI to 10s | 
| Improvement | Enable short circuit mechanism in Tez DAG for simple select queries with LIMIT | 
| Improvement | [HIVE-21100](https://issues.apache.org/jira/browse/HIVE-21100): Allow flattening of table subdirectories resulted when using TEZ engine and UNION clause | 
| Bug Fix | [HIVE-25095](https://issues.apache.org/jira/browse/HIVE-25095): Beeline/hive -e command can't deal with query with trailing quote | 
| Bug Fix | [HIVE-13781](https://issues.apache.org/jira/browse/HIVE-13781): Tez Job failed with FileNotFoundException when partition dir doesnt exists  | 
| Bug Fix | [HIVE-28480](https://issues.apache.org/jira/browse/HIVE-28480): Disable SMB on partition hash generator mismatch across join branches in previous RS | 

### Amazon EMR 7.4.0 - New configurations
Amazon EMR 7.4.0 - New configurations


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| Classification | Name | Default | Description | 
| --- | --- | --- | --- | 
| hive-site | hive.ignore.failure.partition.dir.not.found | false | Ignores failure if the table partition exists but the actual object storage path does not exist. | 
| hive-site | hive.tez.union.flatten.subdirectories | false | When writing data into a table and UNION ALL is the last step of the query, Hive on Tez creates a subdirectory for each branch of the UNION ALL. When this property is enabled, the subdirectories are removed, and the files are renamed and moved to the parent directory. Note that this has no effect when hive.blobstore.use.output-committer is enabled. |