By Aaron Cordova, Billie Rinaldi, Michael Wall
With transparent info on method management, functionality tuning, and most sensible practices, this publication is perfect for builders looking to write Accumulo functions, directors charged with fitting and holding Accumulo, and different pros drawn to what Accumulo has to supply. you can find every little thing you can use the program fully.
- Get a high-level advent to Accumulo’s structure and information model
- Take a fast journey via unmarried- and multiple-node installations, facts ingest, and query
- Learn how you can write Accumulo purposes for numerous use instances, in line with examples
- Dive into Accumulo internals, together with info no longer to be had within the documentation
- Get specific info for fitting, administering, tuning, and measuring performance
- Learn top practices in accordance with profitable implementations within the field
- Find solutions to universal questions that each new Accumulo person asks
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Additional info for Accumulo: Application Development, Table Design, and Best Practices
Utilizing an easy Iterator the very last thing we wish to exhibit in Java code is easy methods to organize an iterator. The shell instance used the integrated GrepIterator. we'll do an analogous right here. To run the instance, use the next, back changing the example identify and ZooKeeper situation as applicable: mvn fresh collect exec:exec -Dtable. name=table2 -Dterm=town \ -Dinstance. name=miniInstance -Dzookeeper. location=localhost:$ZKPORT -Pjava:grep Your effects may still seem like this: working grep command Grepping table2 effects -> bob jones contact:city [billing] 1425613620377 fake anytown fred smith contact:city [billing] 1425613646562 fake othertown The Java code is the same to the test instance, yet rather than constructing a variety, we upload the GrepIterator to the Scanner. this is the code: approach. out. println("Grepping " + table); Authorizations authorizations = connection. securityOperations() . getUserAuthorizations(user); Scanner scanner = connection. createScanner(table, authorizations); Map