Hadoop
2
true
false
false
Hadoop
false
Hadoop:service=NameNode,name=NameNodeInfo
dynamic
Hadoop
Total
1
long
1
Used
1
long
2
HighestPriorityLowRedundancyReplicatedBlocks
1
long
3
HighestPriorityLowRedundancyECBlocks
1
long
4
Free
1
long
5
ProvidedCapacity
1
long
6
NonDfsUsedSpace
1
long
7
PercentUsed
1
float
8
BlockPoolUsedSpace
1
long
9
PercentBlockPoolUsed
1
float
10
PercentRemaining
1
float
11
CacheCapacity
1
long
12
CacheUsed
1
long
13
TotalBlocks
1
long
14
NumberOfMissingBlocks
1
long
15
NumberOfMissingBlocksWithReplicationFactorOne
1
long
16
NNStartedTimeInMillis
1
long
17
NumberOfSnapshottableDirs
1
long
18
DistinctVersionCount
1
int
19
Threads
1
int
20