| Package | Description | 
|---|---|
| org.apache.hadoop.hbase.io | |
| org.apache.hadoop.hbase.ipc | Tools to help define network clients and servers. | 
| org.apache.hadoop.hbase.master | |
| org.apache.hadoop.hbase.master.balancer | |
| org.apache.hadoop.hbase.metrics | Metrics API for HBase. | 
| org.apache.hadoop.hbase.regionserver | |
| org.apache.hadoop.hbase.regionserver.wal | |
| org.apache.hadoop.hbase.replication.regionserver | |
| org.apache.hadoop.hbase.rest | HBase REST | 
| org.apache.hadoop.hbase.thrift | Provides an HBase Thrift
service. | 
| org.apache.hadoop.hbase.zookeeper | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsIOSource | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsIOSourceImpl | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsHBaseServerSource | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsHBaseServerSourceImpl | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsAssignmentManagerSource | 
| interface  | MetricsMasterFileSystemSource | 
| interface  | MetricsMasterProcSourceInterface that classes that expose metrics about the master will implement. | 
| interface  | MetricsMasterQuotaSourceA collection of exposed metrics for space quotas from the HBase Master. | 
| interface  | MetricsMasterSourceInterface that classes that expose metrics about the master will implement. | 
| interface  | MetricsSnapshotSource | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsAssignmentManagerSourceImpl | 
| class  | MetricsMasterFilesystemSourceImpl | 
| class  | MetricsMasterProcSourceImplHadoop2 implementation of MetricsMasterSource. | 
| class  | MetricsMasterQuotaSourceImplImplementation of  MetricsMasterQuotaSourcewhich writes the values passed in via the
 interface to the metrics backend. | 
| class  | MetricsMasterSourceImplHadoop2 implementation of MetricsMasterSource. | 
| class  | MetricsSnapshotSourceImpl | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsBalancerSource | 
| interface  | MetricsStochasticBalancerSourceThis interface extends the basic metrics balancer source to add a function
 to report metrics that related to stochastic load balancer. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsBalancerSourceImpl | 
| class  | MetricsStochasticBalancerSourceImpl | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | ExceptionTrackingSourceCommon interface for metrics source implementations which need to track individual exception
 types thrown or received. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BaseSourceImplHadoop 2 implementation of BaseSource (using metrics2 framework). | 
| class  | ExceptionTrackingSourceImplCommon base implementation for metrics sources which need to track exceptions thrown or
 received. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsHeapMemoryManagerSourceThis interface will be implemented by a MetricsSource that will export metrics from
 HeapMemoryManager in RegionServer into the hadoop metrics system. | 
| interface  | MetricsRegionAggregateSourceThis interface will be implemented by a MetricsSource that will export metrics from
 multiple regions into the hadoop metrics system. | 
| interface  | MetricsRegionServerQuotaSourceA collection of exposed metrics for space quotas from an HBase RegionServer. | 
| interface  | MetricsRegionServerSourceInterface for classes that expose metrics about the regionserver. | 
| interface  | MetricsTableAggregateSourceThis interface will be implemented by a MetricsSource that will export metrics from
 multiple regions of a table into the hadoop metrics system. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsHeapMemoryManagerSourceImplHadoop2 implementation of MetricsHeapMemoryManagerSource. | 
| class  | MetricsRegionAggregateSourceImpl | 
| class  | MetricsRegionServerSourceImplHadoop2 implementation of MetricsRegionServerSource. | 
| class  | MetricsTableAggregateSourceImpl | 
| class  | MetricsTableLatenciesImplImplementation of  MetricsTableLatenciesto track latencies for one table in a
 RegionServer. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsWALSourceInterface of the source that will export metrics about the region server's WAL. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsWALSourceImplClass that transitions metrics from MetricsWAL into the metrics subsystem. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsReplicationSourceProvides access to gauges and counters. | 
| interface  | MetricsReplicationSourceSource | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsReplicationGlobalSourceSource | 
| class  | MetricsReplicationSourceImplHadoop2 implementation of MetricsReplicationSource. | 
| class  | MetricsReplicationSourceSourceImpl | 
| class  | MetricsSourceThis class is for maintaining the various replication statistics for a source and publishing them
 through the metrics interfaces. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsRESTSourceInterface of the Metrics Source that will export data to Hadoop's Metrics2 system. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsRESTSourceImplHadoop Two implementation of a metrics2 source that will export metrics from the Rest server to
 the hadoop metrics2 subsystem. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsThriftServerSourceInterface of a class that will export metrics about Thrift to hadoop's metrics2. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsThriftServerSourceImplHadoop 2 version of  MetricsThriftServerSourceImplements BaseSource through BaseSourceImpl, following the pattern | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | MetricsZooKeeperSourceInterface of the source that will export metrics about the ZooKeeper. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MetricsZooKeeperSourceImplClass that transitions metrics from MetricsZooKeeper into the metrics subsystem. | 
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