Junegunn Choi created HBASE-29378:
-------------------------------------
Summary: Make TestingHBaseCluster expose address/port information
for end users
Key: HBASE-29378
URL: https://issues.apache.org/jira/browse/HBASE-29378
Project: HBase
Issue Type: Improvement
Reporter: Junegunn Choi
h2. Summary
HBASE-13126 introduced TestingHBaseCluster which allows external projects to
easily start a standalone HBase cluster with configurable number of
RegionServers and DataNodes for testing purposes.
It is not only useful for writing integration tests, but also for manual
testing and debugging. To enhance its usability, especially for manual testing,
I suggest that it exposes some most commonly used address and port information.
h2. Proposal
Extend {{TestingHBaseCluster}} with the following methods to expose key address
and port information:
* {{Optional<Integer> getActiveZooKeeperClientPort()}}
** ZooKeeper port for clients using {{ZKConnectionRegistry}})
* {{List<String> getMasterAddresses()}}
** Master addresses for clients using {{RpcConnectionRegistry}}. Can be used to
construct {{hbase.masters}} configuration.
* {{Optional<Integer> getActiveMasterInfoPort()}}
** Info port for the active HBase Master
* {{Optional<Integer> getActiveNameNodeInfoPort()}}
** Info port for the active NameNode
h2. Example usage
The following Kotlin code demonstrates how you can start a standalone HBase
cluster with different numbers of components and print the address/port
information for manual testing:
{code}
import org.apache.hadoop.hbase.testing.TestingHBaseCluster
import org.apache.hadoop.hbase.testing.TestingHBaseClusterOption
fun main() {
val cluster = TestingHBaseCluster.create(
TestingHBaseClusterOption.builder()
.numDataNodes(3)
.numRegionServers(3)
.numMasters(2)
.build()
)
cluster.start()
// For clients using ZKConnectionRegistry
println("ZooKeeper Quorum:
localhost:${cluster.activeZooKeeperClientPort.get()}")
// For clients using RpcConnectionRegistry
println("hbase.masters: ${cluster.masterAddresses.joinToString(",")}")
// Info ports for web UIs
println("Active HBase Master:
http://localhost:${cluster.activeMasterInfoPort.get()}")
println("Active HDFS NameNode:
http://localhost:${cluster.activeNameNodeInfoPort.get()}")
Thread.sleep(Long.MAX_VALUE)
}
{code}
{noformat}
ZooKeeper Quorum: localhost:57924
hbase.masters: 192.168.35.49:61755,192.168.35.49:61758
Active HBase Master: http://localhost:61757
Active HDFS NameNode: http://localhost:61736
{noformat}
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