shuwenwei opened a new pull request, #11414:
URL: https://github.com/apache/iotdb/pull/11414

   ## Description
   1. Fix the bug of LastFlushTime
   2. Add new CompactionTask type: InsertionCrossSpaceCompaction
   
   ### Fix the bug of LastFlushTime
   LastFlushTime will not always be maintained in memory. When the memory is 
insufficient, this value in the memory may disappear. When used again, this 
value will be restored by scanning the TsFileResource in the time partition. 
When performing a Load operation, there is no recovery when updating this 
value, resulting in the updated value being incorrect. This results in 
overlapping data that may appear under normal writes.
   ### InsertionCrossSpaceCompaction
   The data generated by Load will enter unsequence space, and these data will 
be rewritten into the sequence space through CrossSpaceCompaction. However, 
this data may not overlap with the data of the files in the sequence space. In 
this case, the new compaction type move such unsequence files directly to the 
sequence space to avoid repeated writing.
   


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