sequencefile header

来源：互联网发布：马刺知乎 2017 编辑：程序博客网时间：2024/05/29 17:16

key-type: Text

value-type: Text

key1:text-key

value1:text-value

key2:text-key2

value2:text-value2

header:

83                             SEQ6
69
81
6

25                             length
111                           org.apache.hadoop.io.Text
114
103
46
97
112
97
99
104
101
46
104
97
100
111
111
112
46
105
111
46
84
101
120
116

25 length
111 org.apache.hadoop.io.Text
114
103
46
97
112
97
99
104
101
46
104
97
100
111
111
112
46
105
111
46
84
101
120
116

0 boolean; compress
0 boolean: block-compress

0 metadata
0
0
0

74                             sync
62
101
124
-31
59
87
99
-85
67
46
60
-89
-81
-60
66

0                                int: all-length
0
0
20

0                               int: key-length
0
0
9

8                               key length
116                           text-key
101
120
116
45
107
101
121

10                               value length
116                             text-value
101
120
116
45
118
97
108
117
101

0                              int: all-length
0
0
22

0 int: key-length
0
0
10

9 key length
116 text-key2
101
120
116
45
107
101
121
50

11 value length
116 text-key2
101
120
116
45
118
97
108
117
101
50

ref: http://hi.baidu.com/surendaxiao/item/8017127493f1152cd6a89c51