Utilities for MapR-ES

MapR-ES provides the utilities for operating on streams and topics.

Note: MapR-ES can not use MapR-DB Shell to perform operations on streams or topics.
mapr copystream
This utility copies data from one MapR stream to another MapR stream. You can use it, for example, if you want to set up replication manually from one stream to another.
mapr diffstreams
This utility compares the message IDs, metadata, and data in two MapR streams. Then, generates two directories that contain sequence files that you can use to merge the rows from the two MapR streams.
mapr diffstreamswithcrc
This utility uses a cyclic redundancy check to detect differences between sets of messages in the specified MapR streams. Then, for each set of non-identical messages, it performs a detailed comparison. Finally, it generates one or more directories of sequence files. You can use these files either to make a MapR stream identical to its master or merge the messages from two MapR streams.
mapr exportstream and mapr importstream
Use these utilities together to export data from MapR streams into binary sequence files, and then import the data from the binary sequence files into other MapR streams. You can also use the mapr importstream utility to import changes that are specified in sequence files output by the mapr diffstreams utility.
mapr perfconsumer
This utility runs a consumer reading messages from topics in a MapR stream. Use this utility to run consumers when you want to estimate the performance of consumers for your MapR-ES applications, given your network configuration.
mapr perfproducer
This utility runs a producer, generating messages and publishing them to a MapR stream. Use this utility to run producers when you want to estimate the performance of producers for your MapR-ES applications, given your network configuration.
mapr streamanalyzer
This light-weight utility, which is a sample application for the Streams Java class for analytics on MapR streams, lets you count the messages in a stream or a subset of the topics in a stream. The utility also lets you print either whole retrieved messages or a subset of the fields in each message.