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Amazon EMR 7.10.0 - Tez release notes - Amazon EMR
Tez changes

Amazon EMR 7.10.0 - Tez release notes

Amazon EMR 7.10.0 - Tez changes

Type Description
Bug Fix TEZ-4595: Fixed a bug where Tez would crash when trying to process a new DAG while it was still recovering from a previous failure, causing both DAGs to interfere with each other and throw an INVALID_EVENT exception.

Tez release notes

Bug fix notes – The issue occurred when recovery files were present and the Application Master transitioned through RECOVERING → IDLE → RUNNING → IDLE states, creating a brief window where Hive could submit new DAGs during the IDLE → RUNNING transition. Modified the state transition logic to skip IDLE state when recovery files are present. The AM now follows RECOVERING → RUNNING → IDLE flow, ensuring new DAG submission only occurs after the recovered DAG is fully cleaned up.