Impala Query Failed with ERROR “AnalysisException: ORDER BY expression not produced by aggregation output”

Recently, I discovered a bug in Impala that when you are using Expression in the ORDER BY clause, the query will fail with below error message: ERROR: AnalysisException: ORDER BY expression not produced by aggregation output (missing from GROUP BY clause?): (CASE WHEN TRUE THEN 1 ELSE a END) Customer …

Oozie Spark Actions Fail with Error “Spark config without ‘=’: –conf”

Currently Oozie provides easy interface for Spark1 jobs via Spark1 action, so that user does not have to embed spark-submit into shell action. However, recently I have discovered an issue in Oozie that it has a bug to parse Spark configurations and incorrectly generated a spark-submit command to submit Spark …