[jira] [Created] (FLINK-8230) NPE in OrcRowInputFormat on nested structs

[Shang Yuanchun (Jira)]

Sebastian Klemke created FLINK-8230:
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             Summary: NPE in OrcRowInputFormat on nested structs
                 Key: FLINK-8230
                 URL: https://issues.apache.org/jira/browse/FLINK-8230
             Project: Flink
          Issue Type: Bug
          Components: Batch Connectors and Input/Output Formats
    Affects Versions: 1.4.0
            Reporter: Sebastian Klemke
            Priority: Minor


OrcRowInputFormat ignores isNull and isRepeating on nested struct columns. If a struct column contains nulls, it tries to read struct fields, leading to NPE in case of string fields:

{code}
java.lang.NullPointerException
        at java.lang.String.checkBounds(String.java:384)
        at java.lang.String.<init>(String.java:462)
        at org.apache.flink.orc.OrcUtils.readNonNullBytesColumnAsString(OrcUtils.java:392)
        at org.apache.flink.orc.OrcUtils.readField(OrcUtils.java:215)
        at org.apache.flink.orc.OrcUtils.readStructColumn(OrcUtils.java:1203)
        at org.apache.flink.orc.OrcUtils.readField(OrcUtils.java:252)
        at org.apache.flink.orc.OrcUtils.readNonNullStructColumn(OrcUtils.java:677)
        at org.apache.flink.orc.OrcUtils.readField(OrcUtils.java:250)
        at org.apache.flink.orc.OrcUtils.fillRows(OrcUtils.java:142)
        at org.apache.flink.orc.OrcRowInputFormat.ensureBatch(OrcRowInputFormat.java:334)
        at org.apache.flink.orc.OrcRowInputFormat.reachedEnd(OrcRowInputFormat.java:314)
        at org.apache.flink.runtime.operators.DataSourceTask.invoke(DataSourceTask.java:165)
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)
        at java.lang.Thread.run(Thread.java:748)
{code}



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