Stephen Chu created HDFS-5626:
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Summary: dfsadmin -report shows incorrect cache values
Key: HDFS-5626
URL: https://issues.apache.org/jira/browse/HDFS-5626
Project: Hadoop HDFS
Issue Type: Bug
Components: caching
Affects Versions: 3.0.0
Reporter: Stephen Chu
I have a single node hadoop-trunk cluster that has caching enabled and
datanode max locked memory set to 536870912B.
When I run _dfsadmin -report_, I see the following:
{code}
[root@hdfs-c5-nfs hadoop_tar_confs]# hdfs dfsadmin -report
Configured Capacity: 50779643904 (47.29 GB)
Present Capacity: 43480281088 (40.49 GB)
DFS Remaining: 43480227840 (40.49 GB)
DFS Used: 53248 (52 KB)
DFS Used%: 0.00%
Under replicated blocks: 0
Blocks with corrupt replicas: 0
Missing blocks: 0
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Datanodes available: 1 (1 total, 0 dead)
Live datanodes:
Name: 10.20.217.45:50010 (hdfs-c5-nfs.ent.cloudera.com)
Hostname: hdfs-c5-nfs.ent.cloudera.com
Decommission Status : Normal
Configured Capacity: 50779643904 (47.29 GB)
DFS Used: 53248 (52 KB)
Non DFS Used: 7299362816 (6.80 GB)
DFS Remaining: 43480227840 (40.49 GB)
DFS Used%: 0.00%
DFS Remaining%: 85.63%
Configured Cache Capacity: 50779643904 (0 B)
Cache Used: 0 (52 KB)
Cache Remaining: 0 (40.49 GB)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
Last contact: Tue Dec 03 14:59:31 PST 2013
{code}
The values seem to be wrong. In configured cache capacity, we have listed
50779643904 but in parantheses that is translated to (0B). The non-cache
related values with parantheses have correct translations.
It says that I've used 100% of the cache, but the system does not have any
pools or directives.
Also, we see that we have 0 Cache remaining, but that is translated to
(40.49GB).
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