[SPARK-6087] Provide actionable exception if Kryo buffer is not large enough

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.0
• Fix Version/s: 1.3.1, 1.4.0
• Component/s: Spark Core
• Labels: starter
• Assignee: Lev Khomich
• Reporter: Patrick Wendell
• Created: 01/Mar/15 01:32
• Updated: 13/Mar/15 18:17
• Resolved: 13/Mar/15 18:17

Description

Right now if you don't have a large enough Kryo buffer, you get a really confusing exception. I noticed this when using Kryo to serialize broadcasted tables in Spark SQL. We should catch-then-rethrow this in the KryoSerializer, wrapping it in a message that suggests increasing the Kryo buffer size configuration variable.

com.esotericsoftware.kryo.KryoException: Buffer overflow. Available: 0, required: 3
Serialization trace:
value (org.apache.spark.sql.catalyst.expressions.MutableAny)
values (org.apache.spark.sql.catalyst.expressions.SpecificMutableRow)
	at com.esotericsoftware.kryo.io.Output.require(Output.java:138)
	at com.esotericsoftware.kryo.io.Output.writeAscii_slow(Output.java:446)
	at com.esotericsoftware.kryo.io.Output.writeString(Output.java:306)
	at com.esotericsoftware.kryo.serializers.DefaultSerializers$StringSerializer.write(DefaultSerializers.java:153)
	at com.esotericsoftware.kryo.serializers.DefaultSerializers$StringSerializer.write(DefaultSerializers.java:146)
	at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:501)
	at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
	at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
	at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:568)
	at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:318)
	at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:293)
	at com.esotericsoftware.kryo.Kryo.writeObject(Kryo.java:501)
	at com.esotericsoftware.kryo.serializers.FieldSerializer$ObjectField.write(FieldSerializer.java:564)
	at com.esotericsoftware.kryo.serializers.FieldSerializer.write(FieldSerializer.java:213)
	at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:568)
	at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:318)
	at com.esotericsoftware.kryo.serializers.DefaultArraySerializers$ObjectArraySerializer.write(DefaultArraySerializers.java:293)
	at com.esotericsoftware.kryo.Kryo.writeClassAndObject(Kryo.java:568)
	at org.apache.spark.serializer.KryoSerializerInstance.serialize(KryoSerializer.scala:167)
	at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:234)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)

/cc kayousterhout who helped report his issue

Issue Links

• links to: [Github] Pull Request #4947 (levkhomich)