public long getNodeTTLInMSForTree(String path) throws IllegalPathException {
    lock.readLock().lock();
    try {
      return treeModelTTLCache.getLastNodeTTL(PathUtils.splitPathToDetachedNodes(path));
    } finally {
      lock.readLock().unlock();
    }
  }
Get ttl of one specific path node without time precision conversion. If this node does not set
ttl, then return -1.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/analyze/cache/schema/DataNodeTTLCache.java