Package org.apache.hadoop.hbase.regionserver

Interface MetricsRegionServerWrapper

All Known Implementing Classes:

MetricsRegionServerWrapperImpl

@Private
public interface MetricsRegionServerWrapper

This is the interface that will expose RegionServer information to hadoop1/hadoop2 implementations of the MetricsRegionServerSource.

Method Summary

Modifier and Type	Method	Description
void	forceRecompute()	Force a re-computation of the metrics.
int	getActiveScanners()
long	getAverageRegionSize()	Get the average region size to this region server.
long	getAvgStoreFileAge()	Returns Average age of store files hosted on this region server
long	getBlockCacheCount()	Get the number of items in the block cache.
long	getBlockCacheDataBlockCount()	Get the number of DATA blocks in the block cache.
long	getBlockCacheEvictedCount()	Get the number of items evicted from the block cache.
long	getBlockCacheFailedInsertions()	Number of cache insertions that failed.
long	getBlockCacheFreeSize()	Get the size (in bytes) of the block cache that is free.
long	getBlockCacheHitCachingCount()	Get the count of hits to the block cache, for cacheable requests only.
double	getBlockCacheHitCachingPercent()	Get the percent of requests with the block cache turned on that hit the block cache.
long	getBlockCacheHitCount()	Get the count of hits to the block cache
double	getBlockCacheHitPercent()	Get the percent of all requests that hit the block cache.
long	getBlockCacheMissCachingCount()	Get the count of misses to the block cache, for cacheable requests only.
long	getBlockCacheMissCount()	Get the count of misses to the block cache.
long	getBlockCachePrimaryEvictedCount()	Get the number of items evicted from primary replica in the block cache.
long	getBlockCachePrimaryHitCount()	Get the count of hits to primary replica in the block cache
long	getBlockCachePrimaryMissCount()	Get the count of misses to primary replica in the block cache.
long	getBlockCacheSize()	Get the total size (in bytes) of the block cache.
long	getBlockedRequestsCount()	Returns Count of requests blocked because the memstore size is larger than blockingMemStoreSize
long	getBloomChunkHitCount()
long	getBloomChunkMissCount()
long	getBloomFilterEligibleRequestsCount()	Count of requests which could have used bloom filters, but they weren't configured or loaded.
long	getBloomFilterNegativeResultsCount()	Count of bloom filter requests which return a negative result.
long	getBloomFilterRequestsCount()	Count of bloom filter requests.
long	getByteBuffAllocatorHeapAllocationBytes()
double	getByteBuffAllocatorHeapAllocRatio()
long	getByteBuffAllocatorPoolAllocationBytes()
long	getByteBuffAllocatorTotalBufferCount()
long	getByteBuffAllocatorUsedBufferCount()
long	getCellsCountCompactedFromMob()	Gets the number of cells moved from mob during compaction.
long	getCellsCountCompactedToMob()	Gets the number of cells moved to mob during compaction.
long	getCellsSizeCompactedFromMob()	Gets the total amount of cells moved from mob during compaction, in bytes.
long	getCellsSizeCompactedToMob()	Gets the total amount of cells moved to mob during compaction, in bytes.
long	getCheckAndMutateChecksFailed()	Get the number of CAS operations that failed.
long	getCheckAndMutateChecksPassed()	Get the number of CAS operations that passed.
String	getClusterId()	Get the Cluster ID
long	getCompactedCellsCount()	Get the number of cells processed during minor compactions.
long	getCompactedCellsSize()	Get the total amount of data processed during minor compactions, in bytes.
int	getCompactionQueueSize()	Get the size of the compaction queue
String	getCoprocessors()	Get the co-processors
long	getDataHitCount()
long	getDataInMemoryWithoutWAL()	Ammount of data in the memstore but not in the WAL because mutations explicitly had their WAL turned off.
long	getDataMissCount()
long	getDeleteFamilyBloomHitCount()
long	getDeleteFamilyBloomMissCount()
long	getFileInfoHitCount()
long	getFileInfoMissCount()
long	getFilteredReadRequestsCount()	Get the number of filtered read requests to regions hosted on this region server.
long	getFlushedCellsCount()	Get the number of cells flushed to disk.
long	getFlushedCellsSize()	Get the total amount of data flushed to disk, in bytes.
int	getFlushQueueSize()	Get the size of the flush queue.
long	getGeneralBloomMetaHitCount()
long	getGeneralBloomMetaMissCount()
long	getHedgedReadOps()	Returns Count of hedged read operations
long	getHedgedReadOpsInCurThread()	Returns Count of times a hedged read executes in current thread
long	getHedgedReadWins()	Returns Count of times a hedged read beat out the primary read.
long	getIntermediateIndexHitCount()
long	getIntermediateIndexMissCount()
long	getL1CacheCount()	Number of blocks in L1 cache
long	getL1CacheEvictedCount()	Number of blocks evicted from L1 cache
long	getL1CacheFreeSize()	Free cache size (bytes) of L1 cache
long	getL1CacheHitCount()	Hit count of L1 cache.
double	getL1CacheHitRatio()	Hit ratio of L1 cache.
long	getL1CacheMissCount()	Miss count of L1 cache.
double	getL1CacheMissRatio()	Miss ratio of L1 cache.
long	getL1CacheSize()	Cache size (bytes) of L1 cache
long	getL2CacheCount()	Number of blocks in L2 cache
long	getL2CacheEvictedCount()	Number of blocks evicted from L2 cache
long	getL2CacheFreeSize()	Free cache size (bytes) of L2 cache
long	getL2CacheHitCount()	Hit count of L2 cache.
double	getL2CacheHitRatio()	Hit ratio of L2 cache.
long	getL2CacheMissCount()	Miss count of L2 cache.
double	getL2CacheMissRatio()	Miss ratio of L2 cache.
long	getL2CacheSize()	Cache size (bytes) of L2 cache
int	getLargeCompactionQueueSize()
long	getLeafIndexHitCount()
long	getLeafIndexMissCount()
long	getLocalBytesRead()	Returns Number of bytes read from the local HDFS DataNode.
long	getMajorCompactedCellsCount()	Get the number of cells processed during major compactions.
long	getMajorCompactedCellsSize()	Get the total amount of data processed during major compactions, in bytes.
long	getMaxStoreFileAge()	Returns Max age of store files hosted on this region server
long	getMaxStoreFiles()	Get the max number of store files across all regions of this region server.
long	getMemStoreLimit()	Get the limit size of the off heap memstore (if enabled), otherwise get the limit size of the on heap memstore.
long	getMemStoreSize()	Get the size of the memstore on this region server.
long	getMetaHitCount()
long	getMetaMissCount()
long	getMinStoreFileAge()	Returns Min age of store files hosted on this region server
long	getMobFileCacheAccessCount()	Gets the count of accesses to the mob file cache.
long	getMobFileCacheCount()	Gets the count of cached mob files.
long	getMobFileCacheEvictedCount()	Gets the number of items evicted from the mob file cache.
double	getMobFileCacheHitPercent()	Gets the hit percent to the mob file cache.
long	getMobFileCacheMissCount()	Gets the count of misses to the mob file cache.
long	getMobFlushCount()	Gets the number of the flushes in mob-enabled stores.
long	getMobFlushedCellsCount()	Gets the number of mob cells flushed to disk.
long	getMobFlushedCellsSize()	Gets the total amount of mob cells flushed to disk, in bytes.
long	getMobScanCellsCount()	Gets the number of scanned mob cells.
long	getMobScanCellsSize()	Gets the total amount of scanned mob cells, in bytes.
long	getNumMutationsWithoutWAL()	Number of mutations received with WAL explicitly turned off.
long	getNumOnlineRegions()	The number of online regions
long	getNumReferenceFiles()	Returns Number of reference files on this region server
long	getNumStoreFiles()	Get the number of store files hosted on this region server.
long	getNumStores()	Get the number of stores hosted on this region server.
long	getNumWALFiles()	Get the number of WAL files of this region server.
long	getNumWALSlowAppend()	Get the number of WAL files with slow appends for this region server.
long	getOffHeapMemStoreLimit()	Get the limit size of the off heap memstore.
long	getOffHeapMemStoreSize()	Get the size of the off heap memstore on this region server.
long	getOnHeapMemStoreLimit()	Get the limit size of the on heap memstore.
long	getOnHeapMemStoreSize()	Get the size of the on heap memstore on this region server.
double	getPercentFileLocal()	Get the percent of HFiles' that are local.
double	getPercentFileLocalSecondaryRegions()	Get the percent of HFiles' that are local for secondary region replicas.
long	getReadRequestsCount()	Get the number of read requests to regions hosted on this region server.
double	getReadRequestsRatePerSecond()	Get the rate of read requests per second to regions hosted on this region server.
double	getRequestsPerSecond()	Get the number of requests per second.
long	getRootIndexHitCount()
long	getRootIndexMissCount()
long	getRpcFullScanRequestsCount()	Get the number of full region rpc scan requests to this region server.
long	getRpcGetRequestsCount()	Get the number of rpc get requests to this region server.
long	getRpcMultiRequestsCount()	Get the number of rpc multi requests to this region server.
long	getRpcMutateRequestsCount()	Get the number of rpc mutate requests to this region server.
long	getRpcScanRequestsCount()	Get the number of rpc scan requests to this region server.
String	getServerName()	Get ServerName
long	getShortCircuitBytesRead()	Returns Number of bytes read locally through HDFS short circuit.
int	getSmallCompactionQueueSize()
int	getSplitQueueSize()	Get the size of the split queue
long	getStartCode()	Get HRegionServer start time
long	getStoreFileIndexSize()	Get the Size (in bytes) of indexes in storefiles on disk.
long	getStoreFileSize()	Get the total size of the store files this region server is serving from.
long	getTotalBytesRead()	Returns Number of total bytes read from HDFS.
long	getTotalRequestCount()	Get the total number of requests per second.
long	getTotalRowActionRequestCount()
long	getTotalStaticBloomSize()	Get the size (in bytes) of the static bloom filters.
long	getTotalStaticIndexSize()	Get the size (in bytes) of of the static indexes including the roots.
long	getTrailerHitCount()
long	getTrailerMissCount()
long	getUpdatesBlockedTime()	Get the amount of time that updates were blocked.
List<String>	getWALExcludeDNs()	Get the excluded datanodes in the cache of this region server.
long	getWALFileSize()	Get the size of WAL files of this region server.
long	getWriteRequestsCount()	Get the number of write requests to regions hosted on this region server.
double	getWriteRequestsRatePerSecond()	Get the rate of write requests per second to regions hosted on this region server.
long	getZeroCopyBytesRead()	Returns Number of bytes read locally through HDFS zero copy.
String	getZookeeperQuorum()	Get the ZooKeeper Quorum Info

Method Details

getServerName

String getServerName()

Get ServerName

getClusterId

String getClusterId()

Get the Cluster ID

Returns:

Cluster ID

getZookeeperQuorum

String getZookeeperQuorum()

Get the ZooKeeper Quorum Info

Returns:

ZooKeeper Quorum Info

getCoprocessors

String getCoprocessors()

Get the co-processors

Returns:

Co-processors

getStartCode

long getStartCode()

Get HRegionServer start time

Returns:

Start time of RegionServer in milliseconds

getNumOnlineRegions

long getNumOnlineRegions()

The number of online regions

getNumStores

long getNumStores()

Get the number of stores hosted on this region server.

getNumWALFiles

long getNumWALFiles()

Get the number of WAL files of this region server.

getWALFileSize

long getWALFileSize()

Get the size of WAL files of this region server.

getWALExcludeDNs

List<String> getWALExcludeDNs()

Get the excluded datanodes in the cache of this region server.

getNumWALSlowAppend

long getNumWALSlowAppend()

Get the number of WAL files with slow appends for this region server.

getNumStoreFiles

long getNumStoreFiles()

Get the number of store files hosted on this region server.

getMaxStoreFiles

long getMaxStoreFiles()

Get the max number of store files across all regions of this region server.

getMemStoreSize

long getMemStoreSize()

Get the size of the memstore on this region server.

getOnHeapMemStoreSize

long getOnHeapMemStoreSize()

Get the size of the on heap memstore on this region server.

getOffHeapMemStoreSize

long getOffHeapMemStoreSize()

Get the size of the off heap memstore on this region server.

getStoreFileSize

long getStoreFileSize()

Get the total size of the store files this region server is serving from.

getMaxStoreFileAge

long getMaxStoreFileAge()

Returns Max age of store files hosted on this region server

getMinStoreFileAge

long getMinStoreFileAge()

Returns Min age of store files hosted on this region server

getAvgStoreFileAge

long getAvgStoreFileAge()

Returns Average age of store files hosted on this region server

getNumReferenceFiles

long getNumReferenceFiles()

Returns Number of reference files on this region server

getRequestsPerSecond

double getRequestsPerSecond()

Get the number of requests per second.

getTotalRequestCount

long getTotalRequestCount()

Get the total number of requests per second.

getReadRequestsCount

long getReadRequestsCount()

Get the number of read requests to regions hosted on this region server.

getReadRequestsRatePerSecond

double getReadRequestsRatePerSecond()

Get the rate of read requests per second to regions hosted on this region server.

getFilteredReadRequestsCount

long getFilteredReadRequestsCount()

Get the number of filtered read requests to regions hosted on this region server.

getWriteRequestsCount

long getWriteRequestsCount()

Get the number of write requests to regions hosted on this region server.

getWriteRequestsRatePerSecond

double getWriteRequestsRatePerSecond()

Get the rate of write requests per second to regions hosted on this region server.

getCheckAndMutateChecksFailed

long getCheckAndMutateChecksFailed()

Get the number of CAS operations that failed.

getCheckAndMutateChecksPassed

long getCheckAndMutateChecksPassed()

Get the number of CAS operations that passed.

getStoreFileIndexSize

long getStoreFileIndexSize()

Get the Size (in bytes) of indexes in storefiles on disk.

getTotalStaticIndexSize

long getTotalStaticIndexSize()

Get the size (in bytes) of of the static indexes including the roots.

getTotalStaticBloomSize

long getTotalStaticBloomSize()

Get the size (in bytes) of the static bloom filters.

getBloomFilterRequestsCount

long getBloomFilterRequestsCount()

Count of bloom filter requests.

getBloomFilterNegativeResultsCount

long getBloomFilterNegativeResultsCount()

Count of bloom filter requests which return a negative result.

getBloomFilterEligibleRequestsCount

long getBloomFilterEligibleRequestsCount()

Count of requests which could have used bloom filters, but they weren't configured or loaded.

getNumMutationsWithoutWAL

long getNumMutationsWithoutWAL()

Number of mutations received with WAL explicitly turned off.

getDataInMemoryWithoutWAL

long getDataInMemoryWithoutWAL()

Ammount of data in the memstore but not in the WAL because mutations explicitly had their WAL turned off.

getPercentFileLocal

double getPercentFileLocal()

Get the percent of HFiles' that are local.

getPercentFileLocalSecondaryRegions

double getPercentFileLocalSecondaryRegions()

Get the percent of HFiles' that are local for secondary region replicas.

getSplitQueueSize

int getSplitQueueSize()

Get the size of the split queue

getCompactionQueueSize

int getCompactionQueueSize()

Get the size of the compaction queue

getSmallCompactionQueueSize

int getSmallCompactionQueueSize()

getLargeCompactionQueueSize

int getLargeCompactionQueueSize()

getFlushQueueSize

int getFlushQueueSize()

Get the size of the flush queue.

getMemStoreLimit

long getMemStoreLimit()

Get the limit size of the off heap memstore (if enabled), otherwise get the limit size of the on heap memstore.

getOnHeapMemStoreLimit

long getOnHeapMemStoreLimit()

Get the limit size of the on heap memstore.

getOffHeapMemStoreLimit

long getOffHeapMemStoreLimit()

Get the limit size of the off heap memstore.

getBlockCacheFreeSize

long getBlockCacheFreeSize()

Get the size (in bytes) of the block cache that is free.

getBlockCacheCount

long getBlockCacheCount()

Get the number of items in the block cache.

getBlockCacheDataBlockCount

long getBlockCacheDataBlockCount()

Get the number of DATA blocks in the block cache.

getBlockCacheSize

long getBlockCacheSize()

Get the total size (in bytes) of the block cache.

getBlockCacheHitCount

long getBlockCacheHitCount()

Get the count of hits to the block cache

getBlockCachePrimaryHitCount

long getBlockCachePrimaryHitCount()

Get the count of hits to primary replica in the block cache

getBlockCacheHitCachingCount

long getBlockCacheHitCachingCount()

Get the count of hits to the block cache, for cacheable requests only.

getBlockCacheMissCount

long getBlockCacheMissCount()

Get the count of misses to the block cache.

getBlockCachePrimaryMissCount

long getBlockCachePrimaryMissCount()

Get the count of misses to primary replica in the block cache.

getBlockCacheMissCachingCount

long getBlockCacheMissCachingCount()

Get the count of misses to the block cache, for cacheable requests only.

getBlockCacheEvictedCount

long getBlockCacheEvictedCount()

Get the number of items evicted from the block cache.

getBlockCachePrimaryEvictedCount

long getBlockCachePrimaryEvictedCount()

Get the number of items evicted from primary replica in the block cache.

getBlockCacheHitPercent

double getBlockCacheHitPercent()

Get the percent of all requests that hit the block cache.

getBlockCacheHitCachingPercent

double getBlockCacheHitCachingPercent()

Get the percent of requests with the block cache turned on that hit the block cache.

getBlockCacheFailedInsertions

long getBlockCacheFailedInsertions()

Number of cache insertions that failed.

getL1CacheSize

long getL1CacheSize()

Cache size (bytes) of L1 cache

getL1CacheFreeSize

long getL1CacheFreeSize()

Free cache size (bytes) of L1 cache

getL1CacheCount

long getL1CacheCount()

Number of blocks in L1 cache

getL1CacheEvictedCount

long getL1CacheEvictedCount()

Number of blocks evicted from L1 cache

getL1CacheHitCount

long getL1CacheHitCount()

Hit count of L1 cache.

getL1CacheMissCount

long getL1CacheMissCount()

Miss count of L1 cache.

getL1CacheHitRatio

double getL1CacheHitRatio()

Hit ratio of L1 cache.

getL1CacheMissRatio

double getL1CacheMissRatio()

Miss ratio of L1 cache.

getL2CacheSize

long getL2CacheSize()

Cache size (bytes) of L2 cache

getL2CacheFreeSize

long getL2CacheFreeSize()

Free cache size (bytes) of L2 cache

getL2CacheCount

long getL2CacheCount()

Number of blocks in L2 cache

getL2CacheEvictedCount

long getL2CacheEvictedCount()

Number of blocks evicted from L2 cache

getL2CacheHitCount

long getL2CacheHitCount()

Hit count of L2 cache.

getL2CacheMissCount

long getL2CacheMissCount()

Miss count of L2 cache.

getL2CacheHitRatio

double getL2CacheHitRatio()

Hit ratio of L2 cache.

getL2CacheMissRatio

double getL2CacheMissRatio()

Miss ratio of L2 cache.

forceRecompute

void forceRecompute()

Force a re-computation of the metrics.

getUpdatesBlockedTime

long getUpdatesBlockedTime()

Get the amount of time that updates were blocked.

getFlushedCellsCount

long getFlushedCellsCount()

Get the number of cells flushed to disk.

getCompactedCellsCount

long getCompactedCellsCount()

Get the number of cells processed during minor compactions.

getMajorCompactedCellsCount

long getMajorCompactedCellsCount()

Get the number of cells processed during major compactions.

getFlushedCellsSize

long getFlushedCellsSize()

Get the total amount of data flushed to disk, in bytes.

getCompactedCellsSize

long getCompactedCellsSize()

Get the total amount of data processed during minor compactions, in bytes.

getMajorCompactedCellsSize

long getMajorCompactedCellsSize()

Get the total amount of data processed during major compactions, in bytes.

getCellsCountCompactedToMob

long getCellsCountCompactedToMob()

Gets the number of cells moved to mob during compaction.

getCellsCountCompactedFromMob

long getCellsCountCompactedFromMob()

Gets the number of cells moved from mob during compaction.

getCellsSizeCompactedToMob

long getCellsSizeCompactedToMob()

Gets the total amount of cells moved to mob during compaction, in bytes.

getCellsSizeCompactedFromMob

long getCellsSizeCompactedFromMob()

Gets the total amount of cells moved from mob during compaction, in bytes.

getMobFlushCount

long getMobFlushCount()

Gets the number of the flushes in mob-enabled stores.

getMobFlushedCellsCount

long getMobFlushedCellsCount()

Gets the number of mob cells flushed to disk.

getMobFlushedCellsSize

long getMobFlushedCellsSize()

Gets the total amount of mob cells flushed to disk, in bytes.

getMobScanCellsCount

long getMobScanCellsCount()

Gets the number of scanned mob cells.

getMobScanCellsSize

long getMobScanCellsSize()

Gets the total amount of scanned mob cells, in bytes.

getMobFileCacheAccessCount

long getMobFileCacheAccessCount()

Gets the count of accesses to the mob file cache.

getMobFileCacheMissCount

long getMobFileCacheMissCount()

Gets the count of misses to the mob file cache.

getMobFileCacheEvictedCount

long getMobFileCacheEvictedCount()

Gets the number of items evicted from the mob file cache.

getMobFileCacheCount

long getMobFileCacheCount()

Gets the count of cached mob files.

getMobFileCacheHitPercent

double getMobFileCacheHitPercent()

Gets the hit percent to the mob file cache.

getHedgedReadOps

long getHedgedReadOps()

Returns Count of hedged read operations

getHedgedReadWins

long getHedgedReadWins()

Returns Count of times a hedged read beat out the primary read.

getHedgedReadOpsInCurThread

long getHedgedReadOpsInCurThread()

Returns Count of times a hedged read executes in current thread

getTotalBytesRead

long getTotalBytesRead()

Returns Number of total bytes read from HDFS.

getLocalBytesRead

long getLocalBytesRead()

Returns Number of bytes read from the local HDFS DataNode.

getShortCircuitBytesRead

long getShortCircuitBytesRead()

Returns Number of bytes read locally through HDFS short circuit.

getZeroCopyBytesRead

long getZeroCopyBytesRead()

Returns Number of bytes read locally through HDFS zero copy.

getBlockedRequestsCount

long getBlockedRequestsCount()

Returns Count of requests blocked because the memstore size is larger than blockingMemStoreSize

getRpcGetRequestsCount

long getRpcGetRequestsCount()

Get the number of rpc get requests to this region server.

getRpcScanRequestsCount

long getRpcScanRequestsCount()

Get the number of rpc scan requests to this region server.

getRpcFullScanRequestsCount

long getRpcFullScanRequestsCount()

Get the number of full region rpc scan requests to this region server.

getRpcMultiRequestsCount

long getRpcMultiRequestsCount()

Get the number of rpc multi requests to this region server.

getRpcMutateRequestsCount

long getRpcMutateRequestsCount()

Get the number of rpc mutate requests to this region server.

getAverageRegionSize

long getAverageRegionSize()

Get the average region size to this region server.

getDataMissCount

long getDataMissCount()

getLeafIndexMissCount

long getLeafIndexMissCount()

getBloomChunkMissCount

long getBloomChunkMissCount()

getMetaMissCount

long getMetaMissCount()

getRootIndexMissCount

long getRootIndexMissCount()

getIntermediateIndexMissCount

long getIntermediateIndexMissCount()

getFileInfoMissCount

long getFileInfoMissCount()

getGeneralBloomMetaMissCount

long getGeneralBloomMetaMissCount()

getDeleteFamilyBloomMissCount

long getDeleteFamilyBloomMissCount()

getTrailerMissCount

long getTrailerMissCount()

getDataHitCount

long getDataHitCount()

getLeafIndexHitCount

long getLeafIndexHitCount()

getBloomChunkHitCount

long getBloomChunkHitCount()

getMetaHitCount

long getMetaHitCount()

getRootIndexHitCount

long getRootIndexHitCount()

getIntermediateIndexHitCount

long getIntermediateIndexHitCount()

getFileInfoHitCount

long getFileInfoHitCount()

getGeneralBloomMetaHitCount

long getGeneralBloomMetaHitCount()

getDeleteFamilyBloomHitCount

long getDeleteFamilyBloomHitCount()

getTrailerHitCount

long getTrailerHitCount()

getTotalRowActionRequestCount

long getTotalRowActionRequestCount()

getByteBuffAllocatorHeapAllocationBytes

long getByteBuffAllocatorHeapAllocationBytes()

getByteBuffAllocatorPoolAllocationBytes

long getByteBuffAllocatorPoolAllocationBytes()

getByteBuffAllocatorHeapAllocRatio

double getByteBuffAllocatorHeapAllocRatio()

getByteBuffAllocatorTotalBufferCount

long getByteBuffAllocatorTotalBufferCount()

getByteBuffAllocatorUsedBufferCount

long getByteBuffAllocatorUsedBufferCount()

getActiveScanners

int getActiveScanners()