[SPARK-5949] Driver program has to register roaring bitmap classes used by spark with Kryo when number of partitions is greater than 2000

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Fix Version/s: 1.4.0
• Component/s: Spark Core
• Labels: kryo partitioning serialization
• Assignee: Imran Rashid
• Reporter: Peter Torok
• Created: 23/Feb/15 14:35
• Updated: 09/Oct/15 03:11
• Resolved: 03/Mar/15 23:33

Description

When more than 2000 partitions are being used with Kryo, the following classes need to be registered by driver program:

• org.apache.spark.scheduler.HighlyCompressedMapStatus
• org.roaringbitmap.RoaringBitmap
• org.roaringbitmap.RoaringArray
• org.roaringbitmap.ArrayContainer
• org.roaringbitmap.RoaringArray$Element
• org.roaringbitmap.RoaringArray$Element[]
• short[]

Our project doesn't have dependency on roaring bitmap and HighlyCompressedMapStatus is intended for internal spark usage. Spark should take care of this registration when Kryo is used.

Issue Links

• links to: [Github] Pull Request #4877 (squito)