HMaster
E705295
HMaster is the master server process in Apache HBase responsible for managing region servers, coordinating load balancing, and handling administrative operations for the HBase cluster.
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Apache HBase component
ⓘ
master server process ⓘ |
| belongsToProject | Apache Hadoop ecosystem NERFINISHED ⓘ |
| canBe | highly available with multiple backup masters ⓘ |
| category |
NoSQL database infrastructure component
ⓘ
distributed system master node ⓘ |
| communicatesWith | HRegionServer NERFINISHED ⓘ |
| configurationFile | hbase-site.xml ⓘ |
| coordinates |
automatic region rebalancing
ⓘ
manual region movement ⓘ |
| developedFor | HBase cluster management ⓘ |
| electsActiveMasterUsing | ZooKeeper NERFINISHED ⓘ |
| exposes |
JMX metrics
ⓘ
administrative APIs ⓘ |
| hasRole | central coordination point for HBase cluster ⓘ |
| implementedIn | Java NERFINISHED ⓘ |
| introducedIn | Apache HBase NERFINISHED ⓘ |
| license | Apache License 2.0 ⓘ |
| monitors |
region distribution
ⓘ
region server load ⓘ |
| partOf | Apache HBase NERFINISHED ⓘ |
| responsibleFor |
assigning regions to region servers
ⓘ
balancing regions across region servers ⓘ coordinating cluster shutdown ⓘ coordinating cluster startup ⓘ coordinating load balancing ⓘ coordinating region merges ⓘ coordinating region splits ⓘ handling administrative operations ⓘ initiating recovery of failed region servers ⓘ maintaining assignment state of regions ⓘ maintaining cluster metadata ⓘ managing region servers ⓘ managing table creation ⓘ managing table deletion ⓘ managing table schema changes ⓘ monitoring region server health ⓘ reassigning regions on region server failure ⓘ tracking region server registrations in ZooKeeper ⓘ |
| runsOn | HBase master node ⓘ |
| startedBy | HBase master daemon script ⓘ |
| storesMetadataIn | hbase:meta table ⓘ |
| supportsOperation |
disable table
ⓘ
enable table ⓘ namespace management ⓘ snapshot management ⓘ |
| uses | Apache ZooKeeper NERFINISHED ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.