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Posted to issues@impala.apache.org by "Tianyi Wang (JIRA)" <ji...@apache.org> on 2018/05/30 23:40:00 UTC
[jira] [Created] (IMPALA-7097) Print EC info in query plan
Tianyi Wang created IMPALA-7097:
-----------------------------------
Summary: Print EC info in query plan
Key: IMPALA-7097
URL: https://issues.apache.org/jira/browse/IMPALA-7097
Project: IMPALA
Issue Type: Sub-task
Components: Frontend
Affects Versions: Impala 3.1.0
Reporter: Tianyi Wang
Assignee: Tianyi Wang
Impala should print EC-related info in the query plan to help user understand the behavior and diagnose performance issues easier. The most trivial design would look like:
{noformat}
[localhost:21000] functional> explain select * from functional.alltypes;
Query: explain select * from functional.alltypes
+-------------------------------------------------------------+
| Explain String |
+-------------------------------------------------------------+
| Max Per-Host Resource Reservation: Memory=32.00KB Threads=3 |
| Per-Host Resource Estimates: Memory=160.00MB |
| Codegen disabled by planner |
| |
| PLAN-ROOT SINK |
| | |
| 01:EXCHANGE [UNPARTITIONED] |
| | |
| 00:SCAN HDFS [functional.alltypes] |
| partitions=24/24 files=25 size=498.41KB |
| EC files=24 size=478.45KB |
+-------------------------------------------------------------+
{noformat}
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