https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-recover-missing-blocks-of-hdfs-after-delete-a-data/m-p/40478#M27185 <P>There was a blunder we have deleted a data directory by using skipTrash command also.</P><P>The volume to data which we lost was huge. &nbsp;&nbsp;</P> Fri, 16 Sep 2022 10:17:06 GMT mgkrish 2022-09-16T10:17:06Z https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-recover-missing-blocks-of-hdfs-after-delete-a-data/m-p/40478#M27185 <P>There was a blunder we have deleted a data directory by using skipTrash command also.</P><P>The volume to data which we lost was huge. &nbsp;&nbsp;</P> Fri, 16 Sep 2022 10:17:06 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-recover-missing-blocks-of-hdfs-after-delete-a-data/m-p/40478#M27185 mgkrish 2022-09-16T10:17:06Z https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-recover-missing-blocks-of-hdfs-after-delete-a-data/m-p/40499#M27186 I'm afraid there's no easy way to recover out of this if you've not taken HDFS snapshots prior to this either.<BR /><BR />If you've stopped the entire cluster immediately to prevent further disk usage, you can perhaps try to run ext-level disk recovery tools to recover the deleted blocks, and then rollback your NN to start from the pre-deletes checkpoint, and that may give back some fraction of your data. Thu, 05 May 2016 09:51:49 GMT https://community.cloudera.com/t5/Archives-of-Support-Questions/how-to-recover-missing-blocks-of-hdfs-after-delete-a-data/m-p/40499#M27186 Harsh J 2016-05-05T09:51:49Z