[FLINK-11021] ZoneOffset objects don't appear to be serialized correctly

• Type: Bug
• Status: Open
• Priority: Not a Priority
• Resolution: Unresolved
• Affects Version/s: 1.6.2
• Component/s: API / Type Serialization System
• Labels: auto-deprioritized-major auto-deprioritized-minor

Environment

Scala 2.11.11, OpenJDK 1.8.0_192-b12

• Assignee: Unassigned
• Reporter: Christina
• Created: 28/Nov/18 14:45
• Updated: 01/Dec/21 10:43

Description

In Flink 1.6.2 ZoneOffset objects are not being serialized correctly: they are turned into `null` when serialized in a Flink job. I've attached a basic sample job that illustrates the problem along with a few sbt console commands (below) that also exhibit the problem.

 

import org.apache.flink.streaming.api.scala.StreamExecutionEnvironment
import java.time._
import java.time.temporal.ChronoUnit

val env = StreamExecutionEnvironment.createLocalEnvironment(1)
val UTCZoneId = ZoneId.of("UTC")
val UTCZoneOffset = ZoneOffset.UTC
case class MyTime(
timestamp: ZonedDateTime,
zoneOffset: ZoneOffset
) extends Serializable

val now = MyTime(ZonedDateTime.now(UTCZoneId).truncatedTo(ChronoUnit.MILLIS), UTCZoneOffset)
val mytimeTypeInfo = org.apache.flink.api.common.typeinfo.TypeInformation.of(classOf[MyTime])
val ser = mytimeTypeInfo.createSerializer(env.getConfig)
val out = new org.apache.flink.core.memory.ByteArrayDataOutputView()
val serialized = ser.serialize(now, out)
val bytes = out.toByteArray
val in = new org.apache.flink.core.memory.ByteArrayDataInputView(bytes)
val deserialized = ser.deserialize(in)
println(s"""
before serializaton: $now
after serialization: $deserialized
""")