THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The log is logged as below(the log operation is marked as orange).
- select the source file
- log the source file list one by one
- log `sequence` flag
- create the target file
- log the target file
- start merge process
- if finish merge a device, log (`device` `writer.offset`)
- if merge finished, generate *.resource file
- writer.endFile
- log `merge finished`
- delete source files
- delete the ${storagegroup}.compaction.log file
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as the `merge finished` log is written before the source files is deleted, so the files may not be deletedeleted. The recover works as below.
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source
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/0-0-0.tsfile
source
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/1-1-0.tsfile
source
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/2-2-0.tsfile
sequence
target
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/0-0-1.tsfile
root.compactionTest.device9
17535
root.compactionTest.device0
35058
root.compactionTest.device3
52581
root.compactionTest.device4
70104
root.compactionTest.device1
87627
root.compactionTest.device2
105150
root.compactionTest.device7
122673
root.compactionTest.device8
140196
root.compactionTest.device5
157719
root.compactionTest.device6
175242
The recover works as below.
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source
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/0-0-0.tsfile
source
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/1-1-0.tsfile
source
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/2-2-0.tsfile
sequence
target
/Users/surevil/Desktop/workspace/incubator-iotdb/server/target/0-0-1.tsfile
root.compactionTest.device9
17535
root.compactionTest.device0
35058
root.compactionTest.device3
52581
root.compactionTest.device4
70104
root.compactionTest.device1
87627
root.compactionTest.device2
105150
root.compactionTest.device7
122673
root.compactionTest.device8
140196
The recover works as below.
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