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From Chef Win2er <win2erc...@gmail.com>
Subject Trash data after upgrade from 2.7.1 to 2.7.2
Date Fri, 12 Feb 2016 06:01:01 GMT
Hi Hadoop users,

I have hadoop-2.7.1 installed on my cluster with HA, 4 data nodes and 3
journal nodes.
I upgraded it to hadoop2.7.2 a a few days ago following the steps below.


But today I realized that there's trash fold created in data node's data
directory and took a lot of space.

$ hdfs dfs -du -s -h

11.5 G  /

I set replication 2 so the disk usage may be 30G or 40G.
But actually it is 144GB.

$ hdfs dfsadmin -report
Configured Capacity: 422185762816 (393.19 GB)
Present Capacity: 415469745432 (386.94 GB)
DFS Remaining: 260712565164 (242.81 GB)
DFS Used: 154757180268 (144.13 GB)
DFS Used%: 37.25%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
Missing blocks (with replication factor 1): 0

By 'du -h' commnand I got the result below.

11G     ./datanode/current/BP-606697376-<datanode
11G     ./datanode/current/BP-606697376-<datanode
11G     ./datanode/current/BP-606697376-<datanode ip>-1452599640542/current
38G     ./datanode/current/BP-606697376-<datanode
38G     ./datanode/current/BP-606697376-<datanode
38G     ./datanode/current/BP-606697376-<datanode ip>-1452599640542/trash

Could anyone help me with this?


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