blob: d115bee98adc13c47da79eaf3cccffa6dba602b2 (
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
80
|
/**
* 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.store.dfs;
import java.util.Map;
import com.google.common.collect.Maps;
/**
* A metadata context that holds state across multiple invocations of
* the Parquet metadata APIs.
*/
public class MetadataContext {
/** Map of directory path to the status of whether modification time was already checked.
* Note: the #directories is typically a small percentage of the #files, so the memory footprint
* is expected to be relatively small.
*/
private Map<String, Boolean> dirModifCheckMap = Maps.newHashMap();
public enum PruneStatus {
NOT_STARTED, // initial state
PRUNED, // partitions were pruned
NOT_PRUNED // partitions did not get pruned
}
private PruneStatus pruneStatus = PruneStatus.NOT_STARTED;
public MetadataContext() {
}
public void setStatus(String dir) {
dirModifCheckMap.put(dir, true);
}
public void clearStatus(String dir) {
dirModifCheckMap.put(dir, false);
}
public boolean getStatus(String dir) {
if (dirModifCheckMap.containsKey(dir)) {
return dirModifCheckMap.get(dir);
}
return false;
}
public void clear() {
dirModifCheckMap.clear();
}
public void setPruneStatus(PruneStatus status) {
pruneStatus = status;
}
public boolean wasPruningStarted() {
return pruneStatus != PruneStatus.NOT_STARTED;
}
public boolean wasPruned() {
return pruneStatus == PruneStatus.PRUNED;
}
}
|
