[HIVE-20698] Better error instead of NPE when timestamp is null for any row when ingesting to druid

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Druid integration
• Assignee: Nishant Bangarwa
• Reporter: Nishant Bangarwa
• Created: 05/Oct/18 18:35
• Updated: 17/Nov/22 08:55
• Resolved: 10/Oct/18 02:38

Description

Currently when ingesting data to druid we get a wierd NPE when timestamp is null for any row.
We should provide an error with a better message which helps user to know what is actually wrong.

 
Caused by: java.lang.NullPointerException
  at org.apache.hadoop.hive.druid.serde.DruidSerDe.serialize(DruidSerDe.java:364)
  at org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:957)
  at org.apache.hadoop.hive.ql.exec.vector.VectorFileSinkOperator.process(VectorFileSinkOperator.java:111)
  at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:965)
  at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:938)
  at org.apache.hadoop.hive.ql.exec.vector.VectorSelectOperator.process(VectorSelectOperator.java:158)
  at org.apache.hadoop.hive.ql.exec.tez.ReduceRecordSource.processVectorGroup(ReduceRecordSource.java:480)