Damien Stevenson created CASSANDRA-14721:
--------------------------------------------

             Summary: sstabledump displays incorrect value for "position" key
                 Key: CASSANDRA-14721
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-14721
             Project: Cassandra
          Issue Type: Bug
          Components: Tools
            Reporter: Damien Stevenson


When partitions with multiple rows are displayed using sstabledump, the 
"position" value the first row of each partition is incorrect.

For example:
{code:java}
sstabledump mc-1-big-Data.db
[
  {
    "partition" : {
      "key" : [ "1", "24" ],
      "position" : 0
    },
    "rows" : [
      {
        "type" : "row",
        "position" : 66, 
        "clustering" : [ "2013-12-10 00:00:00.000Z" ],
        "liveness_info" : { "tstamp" : "2018-09-12T05:01:09.290086Z" },
        "cells" : [
          { "name" : "centigrade", "value" : 8 },
          { "name" : "chanceofrain", "value" : 0.1 },
          { "name" : "feelslike", "value" : 8 },
          { "name" : "humidity", "value" : 0.76 },
          { "name" : "wind", "value" : 10.0 }
        ]
      },
      {
        "type" : "row",
        "position" : 66, 
        "clustering" : [ "2013-12-11 00:00:00.000Z" ],
        "liveness_info" : { "tstamp" : "2018-09-12T05:01:09.295369Z" },
        "cells" : [
          { "name" : "centigrade", "value" : 4 },
          { "name" : "chanceofrain", "value" : 0.3 },
          { "name" : "feelslike", "value" : 4 },
          { "name" : "humidity", "value" : 0.9 },
          { "name" : "wind", "value" : 12.0 }
        ]
      },
      {
        "type" : "row",
        "position" : 105,
        "clustering" : [ "2013-12-12 00:00:00.000Z" ],
        "liveness_info" : { "tstamp" : "2018-09-12T05:01:09.300841Z" },
        "cells" : [
          { "name" : "centigrade", "value" : 3 },
          { "name" : "chanceofrain", "value" : 0.2 },
          { "name" : "feelslike", "value" : 3 },
          { "name" : "humidity", "value" : 0.68 },
          { "name" : "wind", "value" : 6.0 }
        ]
      }
    ]
  }
]
{code}
 The expected output is:
{code:java}
[
  {
    "partition" : {
      "key" : [ "1", "24" ],
      "position" : 0
    },
    "rows" : [
      {
        "type" : "row",
        "position" : 28,
        "clustering" : [ "2013-12-10 00:00:00.000Z" ],
        "liveness_info" : { "tstamp" : "2018-09-12T05:01:09.290086Z" },
        "cells" : [
          { "name" : "centigrade", "value" : 8 },
          { "name" : "chanceofrain", "value" : 0.1 },
          { "name" : "feelslike", "value" : 8 },
          { "name" : "humidity", "value" : 0.76 },
          { "name" : "wind", "value" : 10.0 }
        ]
      },
      {
        "type" : "row",
        "position" : 66,
        "clustering" : [ "2013-12-11 00:00:00.000Z" ],
        "liveness_info" : { "tstamp" : "2018-09-12T05:01:09.295369Z" },
        "cells" : [
          { "name" : "centigrade", "value" : 4 },
          { "name" : "chanceofrain", "value" : 0.3 },
          { "name" : "feelslike", "value" : 4 },
          { "name" : "humidity", "value" : 0.9 },
          { "name" : "wind", "value" : 12.0 }
        ]
      },
      {
        "type" : "row",
        "position" : 105,
        "clustering" : [ "2013-12-12 00:00:00.000Z" ],
        "liveness_info" : { "tstamp" : "2018-09-12T05:01:09.300841Z" },
        "cells" : [
          { "name" : "centigrade", "value" : 3 },
          { "name" : "chanceofrain", "value" : 0.2 },
          { "name" : "feelslike", "value" : 3 },
          { "name" : "humidity", "value" : 0.68 },
          { "name" : "wind", "value" : 6.0 }
        ]
      }
    ]
  }
]
{code}



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