hadoop - How to find different fragments of a file in HDFS -


is there way find out have fragments of file have put in hdfs gone? mean information file fragments stored in hdfs?

you can use fsck command:

#> hadoop fsck /path/to/file -files -blocks -locations -racks

this lists file, blocks , associated metadata:

  • block name/id
  • block length
  • block replication
  • locations (datanodeip:port)
  • rack (prefix datanode ip's associated rack id)

for example:

/user/chris/file1.txt 123 bytes, 1 block(s): ok 0. blk_432678432632_3426532 len=123 repl=2 [/rack1/1.2.3.4:50010, /rack2/4.5.6.7:50010]

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