hehuiyuan created FLINK-22400:
---------------------------------
Summary: NPE problem when call HiveInspectors.toFlinkObject for
hive-exec 2.0.0
Key: FLINK-22400
URL: https://issues.apache.org/jira/browse/FLINK-22400
Project: Flink
Issue Type: Bug
Components: Connectors / Hive
Reporter: hehuiyuan
Attachments: image-2021-04-21-23-18-56-107.png
ENV:
flink 1.12 hive 2.0.0
ERROR LOG:
{code:java}
Caused by: java.lang.RuntimeException: One or more fetchers have encountered
exception
at
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcherManager.checkErrors(SplitFetcherManager.java:199)
at
org.apache.flink.connector.base.source.reader.SourceReaderBase.getNextFetch(SourceReaderBase.java:154)
at
org.apache.flink.connector.base.source.reader.SourceReaderBase.pollNext(SourceReaderBase.java:116)
at
org.apache.flink.streaming.api.operators.SourceOperator.emitNext(SourceOperator.java:275)
at
org.apache.flink.streaming.runtime.io.StreamTaskSourceInput.emitNext(StreamTaskSourceInput.java:67)
at
org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:65)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:399)
at
org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:191)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:620)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:584)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:844)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:636)
at java.lang.Thread.run(Thread.java:748)
Caused by: java.lang.RuntimeException: SplitFetcher thread 0 received
unexpected exception while polling the records
at
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:146)
at
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.run(SplitFetcher.java:101)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
... 1 more
Caused by: org.apache.flink.connectors.hive.FlinkHiveException:
java.lang.NullPointerException
at
org.apache.flink.connectors.hive.read.HiveMapredSplitReader.nextRecord(HiveMapredSplitReader.java:190)
at
org.apache.flink.connectors.hive.read.HiveBulkFormatAdapter$HiveReader.nextRecord(HiveBulkFormatAdapter.java:336)
at
org.apache.flink.connectors.hive.read.HiveBulkFormatAdapter$HiveReader.readBatch(HiveBulkFormatAdapter.java:319)
at
org.apache.flink.connector.file.src.impl.FileSourceSplitReader.fetch(FileSourceSplitReader.java:67)
at
org.apache.flink.connector.base.source.reader.fetcher.FetchTask.run(FetchTask.java:56)
at
org.apache.flink.connector.base.source.reader.fetcher.SplitFetcher.runOnce(SplitFetcher.java:138)
... 6 more
Caused by: java.lang.NullPointerException
at
org.apache.flink.table.functions.hive.conversion.HiveInspectors.toFlinkObject(HiveInspectors.java:335)
at
org.apache.flink.connectors.hive.read.HiveMapredSplitReader.nextRecord(HiveMapredSplitReader.java:180)
... 11 more
{code}
{code:java}
Map<?, ?> map = mapInspector.getMap(data);
hive-exec 2.0.0
{code}
!image-2021-04-21-23-18-56-107.png|width=372,height=191!
Null may be returned here，then throw NPE when call `map.size`
(map == null)
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