[HIVE-26724] Mask UDF failing with NPE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-beta-1
• Labels: pull-request-available
• Assignee: Ayush Saxena
• Reporter: Ayush Saxena
• Created: 10/Nov/22 20:34
• Updated: 15/Aug/23 06:33
• Resolved: 11/Nov/22 13:39

Description

The mask UDF fails with NPE in prod, due to unavailability of the session conf.

Trace:

	... 20 more
Caused by: java.lang.NullPointerException
	at org.apache.hadoop.hive.ql.udf.generic.MaskHashTransformer.transform(GenericUDFMaskHash.java:50)
	at org.apache.hadoop.hive.ql.udf.generic.StringTransformerAdapter.getTransformedWritable(BaseMaskUDF.java:459)
	at org.apache.hadoop.hive.ql.udf.generic.BaseMaskUDF.evaluate(BaseMaskUDF.java:84)
	at org.apache.hadoop.hive.ql.exec.ExprNodeGenericFuncEvaluator._evaluate(ExprNodeGenericFuncEvaluator.java:235)
	at org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:80)
	at org.apache.hadoop.hive.ql.exec.ExprNodeEvaluator.evaluate(ExprNodeEvaluator.java:68)
	at org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:88)
	... 24 more
], TaskAttempt 1 failed, info=[Error: Error while running task ( failure ) : attempt_1667823513257_0010_2_00_000000_1:java.lang.RuntimeException: java.lang.RuntimeException: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while processing row
	at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:351)
	at org.apache.hadoop.hive.ql.exec.tez.TezProcessor.run(TezProcessor.java:280)
	at org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.run(LogicalIOProcessorRuntimeTask.java:374)

Issue Links

• causes: HIVE-27575 MASK_HASH UDF generate a log per row
• links to: GitHub Pull Request #3750