private ICompactionPerformer createCompactionPerformer() {
    return isSeq ? context.getSeqCompactionPerformer() : context.getUnseqCompactionPerformer();
  }
Check whether the device is completely deleted by mods or not.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/compaction/selector/impl/SettleSelectorImpl.java