Hi,   I have a three node cluster where different tools are reporting different values for missing blocks. None of the tools show files with missing blocks. I've looked for similar reports but haven't found a bug or comment that seems to match this issue. Screenshots and output below, thanks for any assitance.   Using CDH 5.12.0   Cloudera manager reports: "1 missing blocks in the cluster. 33,823 total blocks in the cluster. Percentage missing blocks: 0.00%. Critical threshold: any."   The NN legacy UI reports "No missing blocks found at the moment" when clicking for details.   NN UI: NameNode UI   $ hdfs dfsadmin -report Configured Capacity: 71542176645120 (65.07 TB) Present Capacity: 71539894944988 (65.07 TB) DFS Remaining: 69770020959452 (63.46 TB) DFS Used: 1769873985536 (1.61 TB) DFS Used%: 2.47% Under replicated blocks: 1 Blocks with corrupt replicas: 0 Missing blocks: 1 Missing blocks (with replication factor 1): 0     $ hdfs fsck -includeSnapshots / <snip> Status: HEALTHY Total size: 585202873230 B (Total open files size: 332 B) Total dirs: 8951 Total files: 32467 Total symlinks: 0 (Files currently being written: 5) Total blocks (validated): 33819 (avg. block size 17303967 B) (Total open file blocks (not validated): 4) Minimally replicated blocks: 33819 (100.0 %) Over-replicated blocks: 0 (0.0 %) Under-replicated blocks: 0 (0.0 %) Mis-replicated blocks: 0 (0.0 %) Default replication factor: 3 Average block replication: 3.0 Corrupt blocks: 0 Missing replicas: 0 (0.0 %) Number of data-nodes: 3 Number of racks: 1 ... View more