OpDB system requirements

Before you start using Operationa Database powered by Apache Accumulo (OpDB), review the prerequisites and system requirements to ensure all requirements are fulfilled.

OpDB depends on HDFS and ZooKeeper libraries and configuration information. Therefore, HDFS and ZooKeeper are mandatory services for OpDB.
Accumulo TabletServers must be collocated with DataNodes.
Optionally, you can use OpDB powered by Apache Accumulo with YARN (MapReduce 2).

Table 1. OpDB system requirements for `Accumulo-on-cdp 1.0.0` parcel
	Supported versions	Note
CDP	CDP Private Cloud Base 7.1.5 CDP Private Cloud Base 7.1.6 CDP Private Cloud Base 7.1.7	CDP Public Cloud is not supported. CDP Private Cloud Experiences are not supported.
Operating System	RHEL 7 / CentOS / OL7 Ubuntu 18.04 Bionic Beaver	Supported on the operating system with the same minor versions that are supported for the CDP installation with which OpDB is installed.
JDK	Java 8 and Java 11	Supported for the CDP install with which OpDB is installed.

Table 2. Hardware requirements for Accumulo parcels
Component	Java Heap	CPU	Disk
Master	Minimum: 1 GB 100-1000 tablets: 4 GB 10,000 or more tablets with 200 or more Tablet Servers: 8 GB 10,000 or more tablets with 300 or more Tablet Servers: 12 GB Set this value using the Tablet Server Max Heapsize Accumulo configuration property. See Flume Memory Consumption.	2 Cores. Add more for large clusters or bulk load.	1 disk for local logs
Tablet Server	Minimum: 512 MB Java Heap Recommended: 8 GB Medium scale production (200 or more tablets per Tablet Server): 16 GB Set this value using the Tablet Server Max Heapsize Accumulo configuration property.	Minimum 4 dedicated cores. You can add more cores for larger clusters, when using replication, or for bulk loads.	4 or more spindles for each HDFS DataNode 1 disk for local logs (this disk can be shared with the operating system and/or other Hadoop logs
Tracer	1 - 2 GB, depending on cluster workloads. Set this value using the Tracer Max Heapsize Accumulo configuration property.	2 or more dedicated cores, depending on cluster size and workloads	1 disk for local logs, which can be shared with the operating system and/or other Hadoop logs
GC Role	1 - 2 GB Set this value using the Garbage Collector Max Heapsize Accumulo configuration property.	2 or more dedicated cores, depending on cluster size	1 disk for local logs, which can be shared with the operating system and/or other Hadoop logs
Monitor Role	1 - 2 GB Set this value using the Monitor Max Heapsize Accumulo configuration property.	2 or more dedicated cores, depending on cluster size and workloads	1 disk for local logs, which can be shared with the operating system and/or other Hadoop logs