# Amazon EMR 6.8.0 - Tez release notes
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## Amazon EMR 6.8.0 - Tez changes
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| Type | Description | 
| --- | --- | 
| Backport | [TEZ-3363](https://issues.apache.org/jira/browse/TEZ-3363): Delete intermediate data at the vertex level for Shuffle Handler | 
| Backport | [TEZ-4129](https://issues.apache.org/jira/browse/TEZ-4129): Delete intermediate attempt data for failed attempts for Shuffle Handler | 
| Backport | [TEZ-4430](https://issues.apache.org/jira/browse/TEZ-4430): Fixed tez.task.launch.cmd-opts property not working |