Github user bjmb commented on a diff in the pull request:

    https://github.com/apache/tez/pull/22#discussion_r195270455
  
    --- Diff: tez-runtime-internals/src/main/java/org/apache/tez/runtime/task/TezTaskRunner2.java ---
    @@ -132,7 +135,7 @@ public TezTaskRunner2(Configuration tezConf, UserGroupInformation ugi, String[]
                             ObjectRegistry objectRegistry, String pid,
                             ExecutionContext executionContext, long memAvailable,
                             boolean updateSysCounters, HadoopShim hadoopShim,
    -                        TezExecutors sharedExecutor) throws
    +                        TezExecutors sharedExecutor, SystemEventHandler systemEventHandler) throws
    --- End diff --
    
    Same with this API


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