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  1. HBase
  2. HBASE-21174

[REST] Failed to parse empty qualifier in TableResource#getScanResource

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.0.0, 2.2.0
    • Fix Version/s: 3.0.0, 2.2.0, 1.4.8, 2.1.1, 2.0.3
    • Component/s: REST
    • Labels:
      None

      Description

      GET /t1/*?column=f:c1&column=f:
      

      If I want to get the values of 'f:'(empty qualifier) for all rows in the table by rest server, I will send the above request. However, this request will return all column values.

      TableResource#getScanResource
            for (String csplit : column) {
              String[] familysplit = csplit.trim().split(":");
              if (familysplit.length == 2) {
                if (familysplit[1].length() > 0) {
                  if (LOG.isTraceEnabled()) {
                    LOG.trace("Scan family and column : " + familysplit[0] + "  " + familysplit[1]);
                  }
                  tableScan.addColumn(Bytes.toBytes(familysplit[0]), Bytes.toBytes(familysplit[1]));
                } else {
                  tableScan.addFamily(Bytes.toBytes(familysplit[0]));
                  if (LOG.isTraceEnabled()) {
                    LOG.trace("Scan family : " + familysplit[0] + " and empty qualifier.");
                  }
                  tableScan.addColumn(Bytes.toBytes(familysplit[0]), null);
                }
              } else if (StringUtils.isNotEmpty(familysplit[0])) {
                if (LOG.isTraceEnabled()) {
                  LOG.trace("Scan family : " + familysplit[0]);
                }
                tableScan.addFamily(Bytes.toBytes(familysplit[0]));
              }
            }
      

      Through the above code, when the column has an empty qualifier, the empty qualifier cannot be parsed correctly.In other words, 'f:'(empty qualifier) and 'f' (column family) are considered to have the same meaning, which is wrong.

        Attachments

        1. HBASE-21174.branch-1.001.patch
          8 kB
          Guangxu Cheng
        2. HBASE-21174.master.001.patch
          7 kB
          Guangxu Cheng
        3. HBASE-21174.master.002.patch
          7 kB
          Guangxu Cheng

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              • Assignee:
                andrewcheng Guangxu Cheng
                Reporter:
                andrewcheng Guangxu Cheng
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                Dates

                • Created:
                  Updated:
                  Resolved: