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
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
package parallelai.spyglass.hbase;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.SortedSet;
import java.util.TreeSet;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.io.ImmutableBytesWritable;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.Pair;
public class HBaseSalter {
private static final Log LOG = LogFactory.getLog(HBaseSalter.class);
public static byte [] addSaltPrefix(byte [] key) throws IOException {
if( key == null || key.length < 1 ) throw new IOException("Input Key is EMPTY or Less than 1 Character Long");
String keyStr = Bytes.toString(key);
return Bytes.toBytes(keyStr.substring(keyStr.length() - 1) + "_" + keyStr);
}
public static String addSaltPrefix(String key) throws IOException {
if( key == null || key.length() < 1 ) throw new IOException("Input Key is EMPTY or Less than 1 Character Long");
return (key.substring(key.length() - 1) + "_" + key);
}
public static ImmutableBytesWritable addSaltPrefix( ImmutableBytesWritable key ) throws IOException {
return new ImmutableBytesWritable( addSaltPrefix(key.get()));
}
public static byte [] delSaltPrefix(byte [] key) throws IOException {
if( key == null || key.length < 3 ) throw new IOException("Input Key is EMPTY or Less than 3 Characters Long");
String keyStr = Bytes.toString(key);
return Bytes.toBytes(keyStr.substring(2));
}
public static String delSaltPrefix(String key) throws IOException {
if( key == null || key.length() < 3 ) throw new IOException("Input Key is EMPTY or Less than 3 Characters Long");
return key.substring(2);
}
public static ImmutableBytesWritable delSaltPrefix( ImmutableBytesWritable key ) throws IOException {
return new ImmutableBytesWritable( delSaltPrefix(key.get()));
}
public static final String DEFAULT_PREFIX_LIST = " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
public static Pair<byte[], byte[]>[] getDistributedIntervals(byte[] originalStartKey, byte[] originalStopKey) throws IOException {
return getDistributedIntervals(originalStartKey, originalStopKey, DEFAULT_PREFIX_LIST);
}
public static Pair<byte[], byte[]>[] getDistributedIntervals(byte[] originalStartKey, byte[] originalStopKey, String prefixList) throws IOException {
return getDistributedIntervals(originalStartKey, originalStopKey, HConstants.EMPTY_START_ROW, HConstants.EMPTY_END_ROW, prefixList);
}
public static Pair<byte[], byte[]>[] getDistributedIntervals(
byte[] originalStartKey, byte[] originalStopKey,
byte[] regionStartKey, byte[] regionStopKey,
String prefixList) throws IOException {
LOG.info("".format("OSRT: (%s) OSTP: (%s) RSRT: (%s) RSTP: (%s) PRFX: (%s)",
Bytes.toString(originalStartKey),
Bytes.toString(originalStopKey),
Bytes.toString(regionStartKey),
Bytes.toString(regionStopKey),
prefixList
));
byte[][] startKeys;
byte[][] stopKeys;
if(Arrays.equals(regionStartKey, HConstants.EMPTY_START_ROW)
&& Arrays.equals(regionStopKey, HConstants.EMPTY_END_ROW) ) {
startKeys = getAllKeys(originalStartKey, prefixList);
stopKeys = getAllKeys(originalStopKey, prefixList);
} else if(Arrays.equals(regionStartKey, HConstants.EMPTY_START_ROW)) {
startKeys = getAllKeysWithStop(originalStartKey, prefixList, regionStopKey[0]);
stopKeys = getAllKeysWithStop(originalStopKey, prefixList, regionStopKey[0]);
} else if(Arrays.equals(regionStopKey, HConstants.EMPTY_END_ROW)) {
startKeys = getAllKeysWithStart(originalStartKey, prefixList, regionStartKey[0]);
stopKeys = getAllKeysWithStart(originalStopKey, prefixList, regionStartKey[0]);
} else {
startKeys = getAllKeysInRange(originalStartKey, prefixList, regionStartKey[0], regionStopKey[0]);
stopKeys = getAllKeysInRange(originalStopKey, prefixList, regionStartKey[0], regionStopKey[0]);
}
if( startKeys.length != stopKeys.length) {
throw new IOException("LENGTH of START Keys and STOP Keys DO NOT match");
}
if( Arrays.equals(originalStartKey, HConstants.EMPTY_START_ROW)
&& Arrays.equals(originalStopKey, HConstants.EMPTY_END_ROW) ) {
Arrays.sort(stopKeys, Bytes.BYTES_RAWCOMPARATOR);
// stop keys are the start key of the next interval
for (int i = startKeys.length - 1; i >= 1; i--) {
startKeys[i] = startKeys[i - 1];
}
startKeys[0] = HConstants.EMPTY_START_ROW;
stopKeys[stopKeys.length - 1] = HConstants.EMPTY_END_ROW;
} else if (Arrays.equals(originalStartKey, HConstants.EMPTY_START_ROW)) {
Arrays.sort(stopKeys, Bytes.BYTES_RAWCOMPARATOR);
// stop keys are the start key of the next interval
for (int i = startKeys.length - 1; i >= 1; i--) {
startKeys[i] = startKeys[i - 1];
}
startKeys[0] = HConstants.EMPTY_START_ROW;
} else if (Arrays.equals(originalStopKey, HConstants.EMPTY_END_ROW)) {
Arrays.sort(startKeys, Bytes.BYTES_RAWCOMPARATOR);
// stop keys are the start key of the next interval
for (int i = 0; i < stopKeys.length - 1; i++) {
stopKeys[i] = stopKeys[i + 1];
}
stopKeys[stopKeys.length - 1] = HConstants.EMPTY_END_ROW;
}
Pair<byte[], byte[]>[] intervals = new Pair[startKeys.length];
for (int i = 0; i < startKeys.length; i++) {
intervals[i] = new Pair<byte[], byte[]>(startKeys[i], stopKeys[i]);
}
return intervals;
}
public static byte[][] getAllKeys(byte[] originalKey) throws IOException {
return getAllKeys(originalKey, DEFAULT_PREFIX_LIST);
}
public static byte[][] getAllKeys(byte[] originalKey, String prefixList) throws IOException {
char[] prefixArray = prefixList.toCharArray();
return getAllKeysWithStartStop(originalKey, prefixList, (byte)prefixArray[0], (byte)prefixArray[prefixArray.length - 1]);
}
public static byte[][] getAllKeysWithStart(byte[] originalKey, String prefixList, byte startKey) throws IOException {
char[] prefixArray = prefixList.toCharArray();
return getAllKeysWithStartStop(originalKey, prefixList, startKey, (byte)prefixArray[prefixArray.length - 1]);
}
public static byte[][] getAllKeysWithStop(byte[] originalKey, String prefixList, byte stopKey) throws IOException {
char[] prefixArray = prefixList.toCharArray();
return getAllKeysWithStartStop(originalKey, prefixList, (byte)prefixArray[0], (byte)(stopKey - 1));
}
public static byte[][] getAllKeysInRange(byte[] originalKey, String prefixList, byte startPrefix, byte stopPrefix) {
return getAllKeysWithStartStop(originalKey, prefixList, startPrefix, (byte)(stopPrefix - 1));
}
private static byte[][] getAllKeysWithStartStop(byte[] originalKey, String prefixList, byte startPrefix, byte stopPrefix) {
char[] prefixArray = prefixList.toCharArray();
TreeSet<Byte> prefixSet = new TreeSet<Byte>();
for( char c : prefixArray ) {
prefixSet.add((byte)c);
}
SortedSet<Byte> subSet = prefixSet.subSet(startPrefix, true, stopPrefix, true);
return getAllKeys(originalKey, subSet.toArray(new Byte[]{}));
}
public static byte[][] getAllKeys(byte[] originalKey, Byte [] prefixArray) {
byte[][] keys = new byte[prefixArray.length][];
for (byte i = 0; i < prefixArray.length; i++) {
keys[i] = Bytes.add(new byte[] {prefixArray[i].byteValue()}, Bytes.add( Bytes.toBytes("_"), originalKey));
}
return keys;
}
public static void main(String [] args) throws IOException {
String s = "";
for (byte i = 32; i < Byte.MAX_VALUE; i++) {
s += (char)i;
}
System.out.println("".format("[%s]", s));
System.out.println("".format("[%s]", DEFAULT_PREFIX_LIST));
String start = Bytes.toString(HConstants.EMPTY_START_ROW);
String stop = Bytes.toString(HConstants.EMPTY_END_ROW);
System.out.println("".format("START: (%s) STOP: (%s)", start, stop));
Pair<byte[], byte[]>[] intervals = getDistributedIntervals(Bytes.toBytes(start), Bytes.toBytes(stop), "1423");
for( Pair<byte[], byte[]> p : intervals ) {
System.out.println("".format("iSTART: (%s) iSTOP: (%s)", Bytes.toString(p.getFirst()), Bytes.toString(p.getSecond())));
}
}
}
|
