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https://issues.apache.org/jira/browse/FLINK-3668?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Ted Yu updated FLINK-3668:
--------------------------
    Description: 
Here is the code:
{code}
    List<org.apache.hadoop.mapreduce.InputSplit> splits;
    try {
      splits = this.mapreduceInputFormat.getSplits(jobContext);
    } catch (InterruptedException e) {
      throw new IOException("Could not get Splits.", e);
    }
    HadoopInputSplit[] hadoopInputSplits = new HadoopInputSplit[splits.size()];
{code}
If InterruptedException is caught, InterruptedIOException should be thrown - 
that's minor

The next line accesses splits.size() without null check - so far, I haven't 
found InputFormat which returns null from getSplits().

  was:
Here is the code:
{code}
    List<org.apache.hadoop.mapreduce.InputSplit> splits;
    try {
      splits = this.mapreduceInputFormat.getSplits(jobContext);
    } catch (InterruptedException e) {
      throw new IOException("Could not get Splits.", e);
    }
    HadoopInputSplit[] hadoopInputSplits = new HadoopInputSplit[splits.size()];
{code}
If InterruptedException is caught, splits would be null.
Yet, the next line accesses splits.size() without null check.


> Potential null deference in HadoopInputFormatBase#createInputSplits()
> ---------------------------------------------------------------------
>
>                 Key: FLINK-3668
>                 URL: https://issues.apache.org/jira/browse/FLINK-3668
>             Project: Flink
>          Issue Type: Bug
>            Reporter: Ted Yu
>            Priority: Minor
>
> Here is the code:
> {code}
>     List<org.apache.hadoop.mapreduce.InputSplit> splits;
>     try {
>       splits = this.mapreduceInputFormat.getSplits(jobContext);
>     } catch (InterruptedException e) {
>       throw new IOException("Could not get Splits.", e);
>     }
>     HadoopInputSplit[] hadoopInputSplits = new 
> HadoopInputSplit[splits.size()];
> {code}
> If InterruptedException is caught, InterruptedIOException should be thrown - 
> that's minor
> The next line accesses splits.size() without null check - so far, I haven't 
> found InputFormat which returns null from getSplits().



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