CRZbulabula commented on issue #17030:
URL: https://github.com/apache/iotdb/issues/17030#issuecomment-3827544618

   Hi @dsilletti,
   
   We really appreciate for discovering this bug and your active reply for 
helping us to locate the root cause. In short, your data are safe yet the 
ConfigNodes have deleted prior [data partition 
table](https://iotdb.apache.org/UserGuide/latest/Technical-Insider/Cluster-data-partitioning.html)
 unexpectedly.
   
   This issue occurs when you employ the tree schema mode as well as config 
only the device-level Time to Live (TTL). The affected versions are [1.3.2, 
1.3.6] and [2.0.5, 2.0.6]. We have addressed this fatal bug in 
[this](https://github.com/apache/iotdb/pull/17123) PR, and welcome to click and 
review the correct data partition table expire rules.
   
   To avoid subsequent data partitions being deleted incorrectly, try:
   1. Compile the master branch of Apache IoTDB and upgrade the version of your 
ConfigNode; or
   2. Waiting for the release of version 1.3.7/2.0.7. The release is in 
progress, I believe we will done this before Feb. 10.
   
   To recover your data partition table:
   1. Stop your current IoTDB cluster.
   2. Deploy a new IoTDB cluster with correct version of ConfigNode.
   3. [Load all 
TsFiles](https://iotdb.apache.org/UserGuide/latest/Tools-System/Data-Import-Tool_apache.html)
 from your previous IoTDB cluster.
   
   @dsilletti Thanks again for helping us tackle this fatal issue.
   
   @ruizdiazever Please check this if it is helpful for resolving your issue.
   
   I will close this issue after our next release, if requires no further 
discussions.
   
   Best regards,
   Yongzao


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