[jira] [Created] (FLINK-21683) java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.orc.ReaderImpl cannot be cast to org.apache.orc.Reader

["ying zhang (Jira)" <ji...@apache.org>]

ying zhang created FLINK-21683:
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             Summary: java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.orc.ReaderImpl cannot be cast to org.apache.orc.Reader
                 Key: FLINK-21683
                 URL: https://issues.apache.org/jira/browse/FLINK-21683
             Project: Flink
          Issue Type: Bug
    Affects Versions: 1.12.0
            Reporter: ying zhang
         Attachments: image-2021-03-09-13-58-37-767.png

I meet an Exception:

java.lang.RuntimeException: One or more fetchers have encountered exception 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:395)  at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:191)  at org.apache.flink.streaming.runtime.tasks.StreamTask.runMailboxLoop(StreamTask.java:609)  at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:573)  at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:755)  at org.apache.flink.runtime.taskmanager.Task.run(Task.java:570)  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 common frames omittedCaused by: java.lang.ClassCastException: org.apache.hadoop.hive.ql.io.orc.ReaderImpl cannot be cast to org.apache.orc.Reader  at org.apache.flink.orc.shim.OrcShimV200.createReader(OrcShimV200.java:63)  at org.apache.flink.orc.shim.OrcShimV200.createRecordReader(OrcShimV200.java:98)  at org.apache.flink.orc.AbstractOrcFileInputFormat.createReader(AbstractOrcFileInputFormat.java:104)  at org.apache.flink.orc.AbstractOrcFileInputFormat.createReader(AbstractOrcFileInputFormat.java:52)  at org.apache.flink.connectors.hive.read.HiveBulkFormatAdapter.createReader(HiveBulkFormatAdapter.java:99)  at org.apache.flink.connectors.hive.read.HiveBulkFormatAdapter.createReader(HiveBulkFormatAdapter.java:62)  at org.apache.flink.connector.file.src.impl.FileSourceSplitReader.checkSplitOrStartNext(FileSourceSplitReader.java:112)  at org.apache.flink.connector.file.src.impl.FileSourceSplitReader.fetch(FileSourceSplitReader.java:65)  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 common frames omitted

 

 

 

then I read the source code,I found a problem like this:

!image-2021-03-09-13-58-37-767.png!

 

I want to know if this is a bug?Is there a way to solve this problem?

 

 



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