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https://issues.apache.org/jira/browse/FLINK-15429?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17005178#comment-17005178
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Jingsong Lee commented on FLINK-15429:
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I have tested UDFs, will not go through these codes.
Good to know where these code will be came from. We can add comments to explain.
> read hive table null value of timestamp type will throw an npe
> --------------------------------------------------------------
>
> Key: FLINK-15429
> URL: https://issues.apache.org/jira/browse/FLINK-15429
> Project: Flink
> Issue Type: Bug
> Components: Connectors / Hive
> Affects Versions: 1.10.0
> Reporter: Terry Wang
> Priority: Blocker
> Fix For: 1.10.0
>
>
> When there is null value of timestamp type in hive table, will have exception
> like following:
> Caused by: org.apache.flink.table.api.TableException: Exception in writeRecord
> at
> org.apache.flink.table.filesystem.FileSystemOutputFormat.writeRecord(FileSystemOutputFormat.java:122)
> at
> org.apache.flink.streaming.api.functions.sink.OutputFormatSinkFunction.invoke(OutputFormatSinkFunction.java:87)
> at
> org.apache.flink.streaming.api.functions.sink.SinkFunction.invoke(SinkFunction.java:52)
> at
> org.apache.flink.streaming.api.operators.StreamSink.processElement(StreamSink.java:56)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.pushToOperator(OperatorChain.java:550)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.collect(OperatorChain.java:527)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.collect(OperatorChain.java:487)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:730)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:708)
> at SinkConversion$1.processElement(Unknown Source)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.pushToOperator(OperatorChain.java:550)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.collect(OperatorChain.java:527)
> at
> org.apache.flink.streaming.runtime.tasks.OperatorChain$ChainingOutput.collect(OperatorChain.java:487)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:730)
> at
> org.apache.flink.streaming.api.operators.AbstractStreamOperator$CountingOutput.collect(AbstractStreamOperator.java:708)
> at
> org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collect(StreamSourceContexts.java:104)
> at
> org.apache.flink.streaming.api.functions.source.InputFormatSourceFunction.run(InputFormatSourceFunction.java:93)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100)
> at
> org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63)
> at
> org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:196)
> Caused by: java.lang.NullPointerException
> at
> org.apache.flink.table.catalog.hive.client.HiveShimV100.ensureSupportedFlinkTimestamp(HiveShimV100.java:386)
> at
> org.apache.flink.table.catalog.hive.client.HiveShimV100.toHiveTimestamp(HiveShimV100.java:357)
> at
> org.apache.flink.table.functions.hive.conversion.HiveInspectors.lambda$getConversion$b054b59b$1(HiveInspectors.java:216)
> at
> org.apache.flink.table.functions.hive.conversion.HiveInspectors.lambda$getConversion$7f882244$1(HiveInspectors.java:172)
> at
> org.apache.flink.connectors.hive.HiveOutputFormatFactory$HiveOutputFormat.getConvertedRow(HiveOutputFormatFactory.java:190)
> at
> org.apache.flink.connectors.hive.HiveOutputFormatFactory$HiveOutputFormat.writeRecord(HiveOutputFormatFactory.java:206)
> at
> org.apache.flink.connectors.hive.HiveOutputFormatFactory$HiveOutputFormat.writeRecord(HiveOutputFormatFactory.java:178)
> at
> org.apache.flink.table.filesystem.SingleDirectoryWriter.write(SingleDirectoryWriter.java:52)
> at
> org.apache.flink.table.filesystem.FileSystemOutputFormat.writeRecord(FileSystemOutputFormat.java:120)
> ... 19 more
> We should add null check in HiveShim100#ensureSupportedFlinkTimestamp and
> return a prper value.
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