Jozef Vilcek created FLINK-15773:
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Summary: ClosureCleaner fails with joda DateTimeZone
Key: FLINK-15773
URL: https://issues.apache.org/jira/browse/FLINK-15773
Project: Flink
Issue Type: Bug
Components: API / Core
Affects Versions: 1.9.1
Reporter: Jozef Vilcek
Flink fails to launch my Apache Beam job which uses windowing function with
time zone. Closure cleaner reports time zone as not serializable. Part of stack
trace:
{noformat}
org.joda.time.tz.DateTimeZoneBuilder$OfYear@3b035d0c is not serializable. The
object probably contains or references non serializable fields.
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:151)
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:126)
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:126)
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:126)
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:126)
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:126)
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:126)
org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:71)
org.apache.flink.api.java.DataSet.clean(DataSet.java:186)
org.apache.flink.api.java.DataSet.flatMap(DataSet.java:267)
....{noformat}
Actual instance of DateTimeZone is
[PrecalculatedZone|[https://github.com/JodaOrg/joda-time/blob/v2.10.5/src/main/java/org/joda/time/tz/DateTimeZoneBuilder.java#L1373]]
which itself is serializable but it's fields are not necessarily standalone
java serializable, because enclosing class it managing their serialization and
deserialization.
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