LinMingQiang commented on PR #19995:
URL: https://github.com/apache/flink/pull/19995#issuecomment-1198803992
After modification, only another error will be thrown.
`Caused by: java.lang.NullPointerException: timestamp must to be set before
retrieving it.
at
org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:76)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.connectors.kafka.table.ReducingUpsertWriter$WrappedContext.timestamp(ReducingUpsertWriter.java:171)
~[flink-sql-connector-kafka-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.connector.kafka.sink.KafkaWriter.write(KafkaWriter.java:199)
~[flink-sql-connector-kafka-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.connectors.kafka.table.ReducingUpsertWriter.flush(ReducingUpsertWriter.java:146)
~[flink-sql-connector-kafka-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.connectors.kafka.table.ReducingUpsertWriter.lambda$registerFlush$3(ReducingUpsertWriter.java:124)
~[flink-sql-connector-kafka-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invokeProcessingTimeCallback(StreamTask.java:1648)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$null$21(StreamTask.java:1639)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$1.runThrowing(StreamTaskActionExecutor.java:50)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.mailbox.Mail.run(Mail.java:90)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMailsWhenDefaultActionUnavailable(MailboxProcessor.java:338)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.processMail(MailboxProcessor.java:324)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:201)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:804)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:753)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.runtime.taskmanager.Task.runWithSystemExitMonitoring(Task.java:948)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at
org.apache.flink.runtime.taskmanager.Task.restoreAndInvoke(Task.java:927)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:741)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:563)
~[flink-dist-1.15.1-vip.jar:1.15.1-vip]
at java.lang.Thread.run(Thread.java:748) ~[?:1.8.0_262]`
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