blob: 5de2e34fe01c617765827da0c194d2dcd4d5f186 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
|
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.drill.exec.resourcemgr.config;
import org.apache.drill.exec.ops.QueryContext;
import org.apache.drill.shaded.guava.com.google.common.base.Preconditions;
import java.util.ArrayList;
import java.util.List;
/**
* Used to keep track of selected leaf and all rejected {@link ResourcePool} for the provided query.
* It is used by {@link ResourcePoolImpl#visitAndSelectPool(QueueAssignmentResult, QueryContext)} to store
* information about all the matching and non-matching ResourcePools for a query when ResourcePool selector is
* evaluated against query metadata. Later it is used by
* {@link ResourcePool#visitAndSelectPool(QueueAssignmentResult, QueryContext)} to apply
* {@link org.apache.drill.exec.resourcemgr.config.selectionpolicy.QueueSelectionPolicy} to select only one queue out of all
* the selected queues for a query. It also provides an API to dump all the debug information to know which pools were
* selected and rejected for a query.
*/
public class QueueAssignmentResult {
private static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(QueueAssignmentResult.class);
private final List<ResourcePool> selectedLeafPools = new ArrayList<>();
private final List<ResourcePool> rejectedPools = new ArrayList<>();
public void addSelectedPool(ResourcePool pool) {
Preconditions.checkState(pool.isLeafPool(), "Selected pool %s is not a leaf pool",
pool.getPoolName());
selectedLeafPools.add(pool);
}
public void addRejectedPool(ResourcePool pool) {
rejectedPools.add(pool);
}
public List<ResourcePool> getSelectedLeafPools() {
return selectedLeafPools;
}
public List<ResourcePool> getRejectedPools() {
return rejectedPools;
}
public void logAssignmentResult(String queryId) {
logger.debug("For query {}. Details[{}]", queryId, toString());
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("Selected Leaf Pools: {");
for (ResourcePool pool : selectedLeafPools) {
sb.append(pool.getPoolName()).append(", ");
}
sb.append("} and Rejected pools: {");
for (ResourcePool pool : rejectedPools) {
sb.append(pool.getPoolName()).append(", ");
}
sb.append("}");
return sb.toString();
}
}
|
