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update the task type of mpp task (pingcap#15293)
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@windtalker
windtalker authored Nov 29, 2023
1 parent 7a31582 commit 0c38d18
Showing 1 changed file with 13 additions and 13 deletions.
26 changes: 13 additions & 13 deletions tiflash/use-tiflash-mpp-mode.md
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Original file line number Diff line number Diff line change
Expand Up @@ -81,19 +81,19 @@ MPP 模式目前支持的物理算法有：Broadcast Hash Join、Shuffled Hash J
```sql
mysql> explain select count(*) from customer c join nation n on c.c_nationkey=n.n_nationkey;
+------------------------------------------+------------+-------------------+---------------+----------------------------------------------------------------------------+
| id | estRows | task | access object | operator info |
+------------------------------------------+------------+-------------------+---------------+----------------------------------------------------------------------------+
| HashAgg_23 | 1.00 | root | | funcs:count(Column#16)->Column#15 |
| └─TableReader_25 | 1.00 | root | | data:ExchangeSender_24 |
| └─ExchangeSender_24 | 1.00 | batchCop[tiflash] | | ExchangeType: PassThrough |
| └─HashAgg_12 | 1.00 | batchCop[tiflash] | | funcs:count(1)->Column#16 |
| └─HashJoin_17 | 3000000.00 | batchCop[tiflash] | | inner join, equal:[eq(tpch.nation.n_nationkey, tpch.customer.c_nationkey)] |
| ├─ExchangeReceiver_21(Build) | 25.00 | batchCop[tiflash] | | |
| │ └─ExchangeSender_20 | 25.00 | batchCop[tiflash] | | ExchangeType: Broadcast |
| │ └─TableFullScan_18 | 25.00 | batchCop[tiflash] | table:n | keep order:false |
| └─TableFullScan_22(Probe) | 3000000.00 | batchCop[tiflash] | table:c | keep order:false |
+------------------------------------------+------------+-------------------+---------------+----------------------------------------------------------------------------+
+------------------------------------------+------------+--------------+---------------+----------------------------------------------------------------------------+
| id | estRows | task | access object | operator info |
+------------------------------------------+------------+--------------+---------------+----------------------------------------------------------------------------+
| HashAgg_23 | 1.00 | root | | funcs:count(Column#16)->Column#15 |
| └─TableReader_25 | 1.00 | root | | data:ExchangeSender_24 |
| └─ExchangeSender_24 | 1.00 | mpp[tiflash] | | ExchangeType: PassThrough |
| └─HashAgg_12 | 1.00 | mpp[tiflash] | | funcs:count(1)->Column#16 |
| └─HashJoin_17 | 3000000.00 | mpp[tiflash] | | inner join, equal:[eq(tpch.nation.n_nationkey, tpch.customer.c_nationkey)] |
| ├─ExchangeReceiver_21(Build) | 25.00 | mpp[tiflash] | | |
| │ └─ExchangeSender_20 | 25.00 | mpp[tiflash] | | ExchangeType: Broadcast |
| │ └─TableFullScan_18 | 25.00 | mpp[tiflash] | table:n | keep order:false |
| └─TableFullScan_22(Probe) | 3000000.00 | mpp[tiflash] | table:c | keep order:false |
+------------------------------------------+------------+--------------+---------------+----------------------------------------------------------------------------+
9 rows in set (0.00 sec)
```
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