"Cannot obtain block length for LocatedBlock" error comes because of file is still in being-written state. Run the fsck command to get more information about the error file. $ hdfs fsck -blocks /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/DN27.Apollo.1593219600494.txt.gz Connecting to namenode \ugi=hdfs&blocks=1&path=%2Fuser%2Fbdas%2Fwarehouse%2Fqueue%2Finput%2Fapollo_log%2Fds%3D20200626%2Fhr%3D21%2FDN27.Apollo.1593219600494.txt.gz FSCK started by hdfs (auth:KERBEROS_SSL) from /10.40.29.101 for path /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/DN27.Apollo.1593219600494.txt.gz at Sat Jun 27 08:33:46 EDT 2020 Status: HEALTHY  Total size:    0 B (Total open files size: 21599 B)  Total dirs:    0  Total files:   0  Total symlinks:                      0 (Files currently being written: 1)  Total blocks (validated):       0 (Total open file blocks (not validated): 1)   We can run fsck for the full directory to check for all the file's status: ~]$ hdfs fsck /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/ -files -openforwrite Connecting to namenode \ugi=hdfs&files=1&openforwrite=1&path=%2Fuser%2Fbdas%2Fwarehouse%2Fqueue%2Finput%2Fapollo_log%2Fds%3D20200626%2Fhr%3D21 FSCK started by hdfs (auth:KERBEROS_SSL) from /10.47.27.101 for path /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21 at Sat Jun 27 08:47:32 EDT 2020 /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21 <dir> /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/DN27.Apollo.1593219600494.txt.gz 21599 bytes, 1 block(s), OPENFORWRITE:  OK /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/DN27.Apollo.1593220237244.txt.gz 20661944 bytes, 1 block(s):  OK /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/DN27.Apollo.1593220269292.txt.gz 20857646 bytes, 1 block(s):  OK   In above output it is showing only 1-file is having issue. So run the below command to recover its lease. $ hdfs debug recoverLease -path /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/DN27.Apollo.1593219600494.txt.gz -retries 3   Once succeeded, we will verfiy again with fsck command: $ hdfs fsck /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/ -files -openforwrite Connecting to namenode via ugi=hdfs&files=1&openforwrite=1&path=%2Fuser%2Fbdas%2Fwarehouse%2Fqueue%2Finput%2Fapollo_log%2Fds%3D20200626%2Fhr%3D21 FSCK started by hdfs (auth:KERBEROS_SSL) from /10.40.29.101 for path /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21 at Sat Jun 27 08:49:09 EDT 2020 /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21 <dir> /user/bdas/warehouse/queue/input/apollo_log/ds=20200626/hr=21/DN27.Apollo.1593219600494.txt.gz 3528409 bytes, 1 block(s):  OK   Now the error is resolved. ... View more