THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
The latest 0.8 TsFile format looks like:
Notice that, we have to add a marker to distinguish what kind of structure the next part of data is: 0 is chunk group footer, 1 is chunk header and 2 means no data left.
For more information, you can run tsfile/example/src/main/java/cn/edu/tsinghua/tsfile/TsFileSequenceRead. The class helps to print the file format: e.g.,
`
file length: 1070
file magic head: TsFilev0.8.0
file magic tail: TsFilev0.8.0
Level 1 metadata position: 899
Level 1 metadata size: 899
[Chunk Group]
position: 12
[Chunk]
position: 13
Measurement: sensor_3
[Page]
Page head position: 47
Page data position: 99
points in the page: 5
Uncompressed page data size: 45
time, value: 2, 50
time, value: 4, 51
time, value: 6, 11
time, value: 7, 21
time, value: 8, 31
[Chunk]
position: 145
Measurement: sensor_1
[Page]
Page head position: 179
Page data position: 231
points in the page: 6
Uncompressed page data size: 41
time, value: 1, 1.2
time, value: 3, 1.4
time, value: 4, 1.2
time, value: 6, 7.2
time, value: 7, 6.2
time, value: 8, 9.2
[Chunk]
position: 273
Measurement: sensor_2
[Page]
Page head position: 307
Page data position: 359
points in the page: 7
Uncompressed page data size: 46
time, value: 1, 20
time, value: 2, 20
time, value: 3, 21
time, value: 4, 20
time, value: 6, 10
time, value: 7, 20
time, value: 8, 30
Chunk Group Footer position: 406
device: device_1
[Metadata]
[Device]File Offset: 431, Device device_1, Number of Chunk Groups 1
Measurement:sensor_3
File offset:12
Measurement:sensor_1
File offset:144
Measurement:sensor_2
File offset:272
`