[jira] [Created] (FLINK-17642) Exception while reading broken ORC file is hidden

[Shang Yuanchun (Jira)]

Nikola created FLINK-17642:
------------------------------

             Summary: Exception while reading broken ORC file is hidden
                 Key: FLINK-17642
                 URL: https://issues.apache.org/jira/browse/FLINK-17642
             Project: Flink
          Issue Type: Bug
    Affects Versions: 1.10.1, 1.9.3, 1.8.3
            Reporter: Nikola


I have a simple setup of a batch job like this:


{code:java}
BatchTableEnvironment tableEnvFirst = BatchTableEnvironment.create(env);

OrcTableSource orcTableSource = OrcTableSource.builder()
 .path(String.format("path"), true)
 .forOrcSchema(ORC.getSchema())
 .withConfiguration(hdfsConfig)
 .build();

tableEnvFirst.registerTableSource("table", orcTableSource);

Table nnfTable = tableEnvFirst.sqlQuery(sqlString);

return tableEnvFirst.toDataSet(nnfTable, Row.class);{code}
 

 

And that works just fine to fetch ORC files from hdfs as a DataSet.

However, there are some ORC files which are broken. "Broken" means that they are invalid in some way and cannot be processed / fetch normally. They throw exceptions. Examples of those are:


{code:java}
org.apache.orc.FileFormatException: Malformed ORC file /user/hdfs/orcfile-1 Invalid postscript length 2org.apache.orc.FileFormatException: Malformed ORC file /user/hdfs/orcfile-1 Invalid postscript length 2 at org.apache.orc.impl.ReaderImpl.ensureOrcFooter(ReaderImpl.java:258) at org.apache.orc.impl.ReaderImpl.extractFileTail(ReaderImpl.java:562) at org.apache.orc.impl.ReaderImpl.<init>(ReaderImpl.java:370) at org.apache.orc.OrcFile.createReader(OrcFile.java:342) at org.apache.flink.orc.OrcRowInputFormat.open(OrcRowInputFormat.java:225) at org.apache.flink.orc.OrcRowInputFormat.open(OrcRowInputFormat.java:63) at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:173) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530) at java.lang.Thread.run(Thread.java:748){code}
 

 

 
{code:java}
com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero).com.google.protobuf.InvalidProtocolBufferException: Protocol message contained an invalid tag (zero). at com.google.protobuf.InvalidProtocolBufferException.invalidTag(InvalidProtocolBufferException.java:89) at com.google.protobuf.CodedInputStream.readTag(CodedInputStream.java:108) at org.apache.orc.OrcProto$PostScript.<init>(OrcProto.java:18526) at org.apache.orc.OrcProto$PostScript.<init>(OrcProto.java:18490) at org.apache.orc.OrcProto$PostScript$1.parsePartialFrom(OrcProto.java:18628) at org.apache.orc.OrcProto$PostScript$1.parsePartialFrom(OrcProto.java:18623) at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:89) at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:95) at com.google.protobuf.AbstractParser.parseFrom(AbstractParser.java:49) at org.apache.orc.OrcProto$PostScript.parseFrom(OrcProto.java:19022) at org.apache.orc.impl.ReaderImpl.extractPostScript(ReaderImpl.java:436) at org.apache.orc.impl.ReaderImpl.extractFileTail(ReaderImpl.java:564) at org.apache.orc.impl.ReaderImpl.<init>(ReaderImpl.java:370) at org.apache.orc.OrcFile.createReader(OrcFile.java:342) at org.apache.flink.orc.OrcRowInputFormat.open(OrcRowInputFormat.java:225) at org.apache.flink.orc.OrcRowInputFormat.open(OrcRowInputFormat.java:63) at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:173) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530) at java.lang.Thread.run(Thread.java:748){code}
 

 

Given that some specific files are broken, that's OK to throw exception. However, the issue is that I cannot catch those exceptions and they make my job to fail. I tried to wrap everything in a try-catch block just to see what I can catch and handle, but it seems that when flink runs it, it's not run from that place, but rather from DataSourceTask.invoke()

I can digged a little bit to find out why don't I get an exception and I can see that {{OrcTableSource}} creates {{OrcRowInputFormat}} instance [here|[https://github.com/apache/flink/blob/c8a23c74e618b752bbdc58dca62d997ddd303d40/flink-formats/flink-orc/src/main/java/org/apache/flink/orc/OrcTableSource.java#L157]] which then calls open() and open() has this signature: 


{code:java}
public void open(FileInputSplit fileSplit) throws IOException {{code}
 

 

So the open() throws the exception but I am not able to catch it. 

Is what I am doing correct or is there any other way to handle exception coming from DataSourceTask.invoke()?



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