hdfs fsck
在HDFS中，提供了fsck命令，用于检查HDFS上文件和目录的健康状态、获取文件的block块信息和位置信息等。
hadoop fs -ls hdfs://bdpe101:9000/user/oap/oaptest/0.5-allFileFormat/tpcds/parquet_tpcds_2/store_sales/part-00064-83f1c5b1-1f95-4830-ac17-da26ab92e183-c000.snappy.parquet
-rw-r--r-- 3 root supergroup 25243183 2018-10-29 14:58 hdfs://bdpe101:9000/user/oap/oaptest/0.5-allFileFormat/tpcds/parquet_tpcds_2/store_sales/part-00064-83f1c5b1-1f95-4830-ac17-da26ab92e183-c000.snappy.parquet
hadoop fsck hdfs://bdpe101:9000/user/oap/oaptest/0.5-allFileFormat/tpcds/parquet_tpcds_2/store_sales/part-00064-83f1c5b1-1f95-4830-ac17-da26ab92e183-c000.snappy.parquet
FSCK started by root (auth:SIMPLE) from /10.239.47.134 for path /user/oap/oaptest/0.5-allFileFormat/tpcds/parquet_tpcds_2/store_sales/part-00064-83f1c5b1-1f95-4830-ac17-da26ab92e183-c000.snappy.parquet at Wed Dec 19 17:00:42 CST 2018
.Status: HEALTHY
Total size: 25243183 B
Total dirs: 0
Total files: 1
Total symlinks: 0
Total blocks (validated): 1 (avg. block size 25243183 B)
Minimally replicated blocks: 1 (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: 4
Number of racks: 1
FSCK ended at Wed Dec 19 17:00:42 CST 2018 in 1 milliseconds
The filesystem under path '/user/oap/oaptest/0.5-allFileFormat/tpcds/parquet_tpcds_2/store_sales/part-00064-83f1c5b1-1f95-4830-ac17-da26ab92e183-c000.snappy.parquet' is HEALTHY