Akira AJISAKA created HDFS-5659:
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Summary: dfsadmin -report doesn't output cache information properly
Key: HDFS-5659
URL: https://issues.apache.org/jira/browse/HDFS-5659
Project: Hadoop HDFS
Issue Type: Bug
Components: caching
Affects Versions: 3.0.0
Reporter: Akira AJISAKA
I tried to cache a file by "hdfs cacheadmin -addDirective".
I thought the file was cached because "CacheUsed" at jmx was more than 0.
{code}
{
"name" :
"Hadoop:service=DataNode,name=FSDatasetState-DS-1043926324-172.28.0.102-50010-1385087929296",
"modelerType" :
"org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.FsDatasetImpl",
"Remaining" : 5604772597760,
"StorageInfo" : "FSDataset{dirpath='[/hadoop/data1/dfs/data/current,
/hadoop/data2/dfs/data/current, /hadoop/data3/dfs/data/current]'}",
"Capacity" : 5905374474240,
"DfsUsed" : 11628544,
"CacheCapacity" : 1073741824,
"CacheUsed" : 360448,
"NumFailedVolumes" : 0,
"NumBlocksCached" : 1,
"NumBlocksFailedToCache" : 0,
"NumBlocksFailedToUncache" : 0
},
{code}
But "dfsadmin -report" didn't output the same value as jmx.
{code}
Configured Cache Capacity: 0 (0 B)
Cache Used: 0 (0 B)
Cache Remaining: 0 (0 B)
Cache Used%: 100.00%
Cache Remaining%: 0.00%
{code}
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