steveloughran commented on code in PR #331:
URL: https://github.com/apache/tez/pull/331#discussion_r1478949443


##########
tez-runtime-internals/src/main/java/org/apache/tez/runtime/task/TaskRunner2Callable.java:
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@@ -116,6 +120,11 @@ public TaskRunner2CallableResult run() throws Exception {
       // For a successful task, however, this should be almost no delay since 
close has already happened.
       maybeFixInterruptStatus();
       LOG.info("Cleaning up task {}, stopRequested={}", 
task.getTaskAttemptID(), stopRequested.get());
+      String ioStats = IOStatisticsLogging.ioStatisticsToPrettyString(

Review Comment:
   looks good. you know you can take a snapshot of it and serialize it as java 
serializable or json; been some discussion about making a Writable too.



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