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  1. IMPALA
  2. IMPALA-4565

Incorrect results under ASAN with mt_dop > 0 and old aggs/joins

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      Description

      There are 7300 rows in alltypes but count returns varying numbers.

      [tarmstrong-box.ca.cloudera.com:21000] > use functional_parquet; set mt_dop=1; select count(*) from alltypes; summary;
      Query: use functional_parquet
      MT_DOP set to 1
      Query: select count(*) from alltypes
      Query submitted at: 2016-11-30 22:31:17 (Coordinator: http://tarmstrong-box:25000)
      Query progress can be monitored at: http://tarmstrong-box:25000/query_plan?query_id=3346df982e7ba933:b9cbaacf00000000
      +----------+
      | count(*) |
      +----------+
      | 900      |
      +----------+
      Fetched 1 row(s) in 0.13s
      +--------------+--------+----------+----------+-------+------------+----------+---------------+-----------------------------+
      | Operator     | #Hosts | Avg Time | Max Time | #Rows | Est. #Rows | Peak Mem | Est. Peak Mem | Detail                      |
      +--------------+--------+----------+----------+-------+------------+----------+---------------+-----------------------------+
      | 03:AGGREGATE | 1      | 762.35us | 762.35us | 1     | 1          | 8.04 MB  | -1 B          | FINALIZE                    |
      | 02:EXCHANGE  | 1      | 56.20us  | 56.20us  | 3     | 1          | 0 B      | -1 B          | UNPARTITIONED               |
      | 01:AGGREGATE | 3      | 541.97us | 571.22us | 3     | 1          | 8.02 MB  | 10.00 MB      |                             |
      | 00:SCAN HDFS | 3      | 6.00ms   | 7.60ms   | 900   | 7.30K      | 16.00 KB | 0 B           | functional_parquet.alltypes |
      +--------------+--------+----------+----------+-------+------------+----------+---------------+-----------------------------+
      

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            • Assignee:
              tarmstrong Tim Armstrong
              Reporter:
              tarmstrong Tim Armstrong
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                Updated:
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