[IMPALA-1287] explain_level=0 for merging exchange is too vebose

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 1.4.1
• Fix Version/s: Impala 2.1
• Assignee: Martin Grund
• Reporter: Nong Li
• Created: 20/Sep/14 19:50
• Updated: 24/Oct/14 17:32
• Resolved: 17/Oct/14 15:38

Description

|                                                                                       |
| 17:MERGING-EXCHANGE [UNPARTITIONED]                                                   |
| |  order by: c_last_name ASC, c_first_name ASC, substr(s_city, 1, 30) ASC,  |
| 10:TOP-N [LIMIT=100]                                                                  |
| 09:HASH JOIN [INNER JOIN, BROADCAST]                                                  |
| |--16:EXCHANGE [BROADCAST]                                                            |
| |  08:SCAN HDFS [tpcds500gb_parquet.customer]                                         |
| 15:AGGREGATE [FINALIZE]                                                               |

Not expecting the order by predicates (it's not for topn)