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https://issues.apache.org/jira/browse/DRILL-850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011598#comment-14011598
]
Zhiyong Liu commented on DRILL-850:
-----------------------------------
0: jdbc:drill:schema=dfs> alter session set `planner.enable_multiphase_agg` =
false;
+------------+------------+
| ok | summary |
+------------+------------+
| true | planner.enable_multiphase_agg updated. |
+------------+------------+
1 row selected (0.031 seconds)
0: jdbc:drill:schema=dfs> alter session set `planner.enable_hashagg` = false;
+------------+------------+
| ok | summary |
+------------+------------+
| true | planner.enable_hashagg updated. |
+------------+------------+
1 row selected (0.022 seconds)
0: jdbc:drill:schema=dfs> select cast(c_groupby as varchar(4)),
count(distinct(c_int)), count(distinct(c_bigint)), count(distinct(c_float4)),
count(distinct(c_float8)) from data group by c_groupby;
Query failed: org.apache.drill.exec.rpc.RpcException: Remote failure while
running query.[error_id: "c27ac681-6a4e-4bb4-bc45-a9f32cd6121e"
endpoint {
address: "perfnode104.perf.lab"
user_port: 31010
control_port: 31011
data_port: 31012
}
error_type: 0
message: "Failure while running fragment. < UnsupportedOperationException:[
Failure finding function that runtime code generation expected. Signature:
compare_to( INT:OPTIONALVARBINARY:OPTIONAL, ) returns INT:REQUIRED ]"
]
Error: exception while executing query (state=,code=0)
0: jdbc:drill:schema=dfs> alter session set `planner.enable_hashagg` = true;
+------------+------------+
| ok | summary |
+------------+------------+
| true | planner.enable_hashagg updated. |
+------------+------------+
1 row selected (0.021 seconds)
0: jdbc:drill:schema=dfs> alter session set `planner.enable_multiphase_agg` =
true;
+------------+------------+
| ok | summary |
+------------+------------+
| true | planner.enable_multiphase_agg updated. |
+------------+------------+
1 row selected (0.031 seconds)
0: jdbc:drill:schema=dfs> select cast(c_groupby as varchar(4)),
count(distinct(c_int)), count(distinct(c_bigint)), count(distinct(c_float4)),
count(distinct(c_float8)) from data group by c_groupby;
+------------+------------+------------+------------+------------+
| EXPR$0 | EXPR$1 | EXPR$2 | EXPR$3 | EXPR$4 |
+------------+------------+------------+------------+------------+
| "" | 6 | 6 | 6 | 6 |
| abc | 6 | 6 | 6 | 6 |
| ab | 5 | 6 | 6 | 6 |
| a | 5 | 5 | 5 | 5 |
+------------+------------+------------+------------+------------+
4 rows selected (3.274 seconds)
> support of multiple count(distinct) inconsistent
> ------------------------------------------------
>
> Key: DRILL-850
> URL: https://issues.apache.org/jira/browse/DRILL-850
> Project: Apache Drill
> Issue Type: Bug
> Components: Functions - Drill
> Reporter: Zhiyong Liu
>
> git.commit.id.abbrev=01bf849
> git.commit.id=01bf8496b217781521c943cc1a9a38ed9f841288
> With planner.enable_multiphase_agg and planner.enable_hashagg set to false,
> planner.enable_hashagg is encountered for the following query:
> select cast(c_groupby as varchar(4)), count(distinct(c_int)),
> count(distinct(c_bigint)), count(distinct(c_float4)),
> count(distinct(c_float8)) from data group by c_groupby;
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