[GitHub] [beam] kennknowles opened a new issue, #18512: Unchecked return value from bis.read() in MutationGroupEncoder#decodeMutation

[GitBox <gi...@apache.org>]

kennknowles opened a new issue, #18512:
URL: https://github.com/apache/beam/issues/18512

   ```
   
     private Mutation decodeMutation(ByteArrayInputStream bis) throws IOException {
       Mutation.Op op
   = Mutation.Op.values()[bis.read()];
       if (op == Mutation.Op.DELETE) {
         return decodeDelete(bis);
   
   ```
   
   The return value from bis.read() should be checked before it is used to dereference values().
   
   Imported from Jira [BEAM-3140](https://issues.apache.org/jira/browse/BEAM-3140). Original Jira may contain additional context.
   Reported by: yuzhihong@gmail.com.


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