8.2. Accumulo Configuration¶
This section details Accumulo specific configuration properties. For general properties, see Runtime Configuration.
8.2.1. Batch Writer Properties¶
The following properties control the configuration of Accumulo BatchWriter
s. They map directly to the
underlying BatchWriter
methods.
8.2.1.1. geomesa.batchwriter.latency¶
The latency is defined as a duration, e.g. 60 seconds
or 100 millis
. See the Accumulo API for details.
8.2.1.2. geomesa.batchwriter.maxthreads¶
Determines the max threads used for writing. See the Accumulo API for details.
8.2.1.3. geomesa.batchwriter.memory¶
The memory is defined in bytes, e.g. 10mb
or 100kb
. See the Accumulo API for details.
8.2.1.4. geomesa.batchwriter.timeout.millis¶
The timeout is defined as a duration, e.g. 60 seconds
or 100 millis
. See the Accumulo API for details.
8.2.2. Map Reduce Input Splits Properties¶
The following properties control the number of input splits for a map reduce job. See the Accumulo User Manual for details.
8.2.2.1. geomesa.mapreduce.splits.max¶
Set the absolute number of splits when configuring a mapper instead of allowing Accumulo to create a split for each range or basing it on the number of tablet servers.
Setting this value overrides geomesa.mapreduce.splits.tserver.max
.
8.2.2.2. geomesa.mapreduce.splits.tserver.max¶
Set the max number of splits per tablet server when configuring a mapper. By default this value is
calculated using Accumulo’s AbstractInputFormat.getSplits
method which creates a split for each range. In
some scenarios this may create an undesirably large number of splits.
This value is overwritten by geomesa.mapreduce.splits.max
if it is set.
8.2.3. Zookeeper Session Timeout¶
8.2.3.1. instance.zookeeper.timeout¶
The Zookeeper timeout is defined in milliseconds, according to the Accumulo specification. See the Accumulo User Manual for details.