[HBASE-24600] Empty RegionAction added to MultiRequest in case of RowMutations/CheckAndMutate batch

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.3.0, 2.1.10, 2.2.6
• Hadoop Flags: Reviewed
• Assignee: Toshihiro Suzuki
• Reporter: Toshihiro Suzuki
• Created: 20/Jun/20 12:18
• Updated: 26/Jun/20 02:16
• Resolved: 25/Jun/20 01:32

Description

When a client sends RowMutations/CheckAndMutate batch requests, no Action objects are added to the builder (RegionAction.Builder), so empty RegionAction is added to MultiRequest at the following line:
https://github.com/apache/hbase/blob/3c319811799cb4c1f51fb5b43dd4743acd28052c/hbase-client/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/RequestConverter.java#L593

We need to check if the builder has any Action objects or not here.

Issue Links

• links to: GitHub Pull Request #1938