[IMPALA-9977] Impala's COMPUTE STATS statement generates duplicate Ranger audit log entries for the ALTER events

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Component/s: Frontend
• Target Version: Impala 4.0.0
• Epic Color: ghx-label-4
• Assignee: Fang-Yu Rao
• Reporter: Fang-Yu Rao
• Created: 20/Jul/20 22:37
• Updated: 03/Aug/20 17:52
• Resolved: 03/Aug/20 17:52

Description

IMPALA-9625 fixed the reported problem converting every fully-qualified table name to lowercase in the method call to addAccessEvent() at https://github.com/apache/impala/blame/master/fe/src/main/java/org/apache/impala/analysis/Analyzer.java#L2881-L2882 so that we will not have duplicate audit log entries in the file specified by the flag of "-audit_event_log_dir" when starting Impala.

However, the patch for IMPALA-9625 did not fix the problem of duplicate Ranger log entries resulting from the registration of privilege requests at https://github.com/apache/impala/blame/master/fe/src/main/java/org/apache/impala/analysis/Analyzer.java#L2860-L2872.

Specifically, Ranger performs authorization based on the privilege requests added in the for-loop pointed out above, where the fully-qualified table names are NOT converted to lowercase. Thus, we should also make the full table name consistent for those privilege requests that will be used by Ranger.