Hbase: put multiple versions of a row at the same time using JSON

Question

From Cloudera Hbase REST API docs this is XML structure to PUT multiple rows at the same time.

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
  <CellSet>
    <Row key="cm93NQo=">
      <Cell column="Y2Y6ZQo=">dmFsdWU1Cg==</Cell>
      <Cell column="Y2Y6ZQo=">dmFsdWU1Cg==</Cell>
    </Row>
    <Row key="cm93NQo=">
      <Cell column="Y2Y6ZQo=">dmFsdWU1Cg==</Cell>
    </Row>
  </CellSet>

Q: How do I do it using JSON?

What I've tried so far:

1. With CellSet key, having following error:

Error 500 Unrecognized field "CellSet" (Class org.apache.hadoop.hbase.rest.model.CellSetModel), not marked as ignorable

    {
      "CellSet": {
        "Row": [
          {
            "key": "cm93NQo=",
            "Cell": [
              {
                "column": "Y2Y6ZQo=",
                "$": "dmFsdWU1Cg=="
              },
              {
                "column": "Y2Y6ZQo=",
                "$": "dmFsdWU1Cg=="
              }
            ]
          },
          {
            "key": "cm93NQo=",
            "Cell": [
              {
                "column": "Y2Y6ZQo=",
                "$": "dmFsdWU1Cg=="
              }
            ]
          }
        ]
      }
    }

2. Without CellSet key, without errors and with only one version per row:

{
   "Row": [
    {
      "key": "cm93NQo=",
      "Cell": [
        {
          "column": "Y2Y6ZQo=",
          "$": "dmFsdWU1Cg=="
        },
        {
          "column": "Y2Y6ZQo=",
          "$": "dmFsdWU1Cg=="
        }
      ]
    },
    {
      "key": "cm93NQo=",
      "Cell": [
        {
          "column": "Y2Y6ZQo=",
          "$": "dmFsdWU1Cg=="
        }
      ]
    }
  ]
}

Answer 1

Sure you can't insert multiple versions of a row if they will have the same timestamp. In your example data is identified only with row key and a column. I did not work with Cloudera and never used HBase REST api, but according to source code on github, CellModel allows to set cell timestamp. So I suggest to add it to your request:

"Row": [
    {
      "key": "myRowKey",
      "Cell": [
        {
          "column": "myColumn",
          "$": "value1",
          "timestamp" : 1473379200
        },
        {
          "column": "myColumn",
          "$": "value2",
          "timestamp" : 1470000000
        }
      ]
    }

Also, in your example there are two rows with same key, check that data is correct