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Date: Thu, 23 Mar 2017 12:56:41 +0000 (UTC)
From: "Julien Vaudour (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
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Subject: [jira] [Created] (HADOOP-14219) RumenToSLS: parsing problem with
 crashed attempts
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archived-at: Thu, 23 Mar 2017 12:56:48 -0000

Julien Vaudour created HADOOP-14219:
---------------------------------------

             Summary: RumenToSLS: parsing problem with crashed attempts
                 Key: HADOOP-14219
                 URL: https://issues.apache.org/jira/browse/HADOOP-14219
             Project: Hadoop Common
          Issue Type: Bug
          Components: tools
    Affects Versions: 2.6.0
            Reporter: Julien Vaudour
            Priority: Minor


In case of crashed task attempts, we may have in rumen logs task attempts with null hostName and finishTime defined to -1

for example
{code}
       {
          "resourceUsageMetrics": {
            "heapUsage": 0,
            "physicalMemoryUsage": 0,
            "virtualMemoryUsage": 0,
            "cumulativeCpuUsage": 0
          },
          "vmemKbytes": [],
          "physMemKbytes": [],
          "cpuUsages": [],
          "clockSplits": [],
          "location": null,
          "sortFinished": -1,
          "shuffleFinished": -1,
          "spilledRecords": -1,
          "reduceOutputRecords": -1,
          "reduceShuffleBytes": -1,
          "fileBytesRead": -1,
          "hdfsBytesWritten": -1,
          "hdfsBytesRead": -1,
          "hostName": null,
          "finishTime": -1,
          "startTime": 1489619193378,
          "result": null,
          "attemptID": "attempt_1488896259152_410442_r_000015_1",
          "fileBytesWritten": -1,
          "mapInputRecords": -1,
          "mapInputBytes": -1,
          "mapOutputBytes": -1,
          "mapOutputRecords": -1,
          "combineInputRecords": -1,
          "reduceInputGroups": -1,
          "reduceInputRecords": -1
        }
{code}

Jackson parser will automatically consider -1 as a java.lang.Integer. However RumenToSLSConverter make the assumption than jackson has deserialize all timstamp as instance of java.lang.Long, resulting in a ClassCastException.

RumenToSLSConverter also make the assumption that hostName is not null, so we can also have a NullPointerException.


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