Stack Overflow
Stack Overflow

Questions tagged [accumulo]

The Apache Accumulo sorted, distributed key/value store is based on Google's BigTable design. It is built on top of Apache Hadoop, ZooKeeper, and Thrift. It features a few novel improvements on the BigTable design in the form of cell-level access labels and a server-side programming mechanism that can modify key/value pairs at various points in the data management process.

The Apache Accumulo sorted, distributed key/value store is a robust, scalable, high performance data storage and retrieval system. Apache Accumulo is based on Google's BigTable design and is built on top of Apache Hadoop, ZooKeeper, and Thrift. Apache Accumulo features a few novel improvements on the BigTable design in the form of cell-based access control and a server-side programming mechanism that can modify key/value pairs at various points in the data management process. Other notable improvements and feature are outlined here.

Google published the design of BigTable in 2006. Several other open source projects have implemented aspects of this design including HBase, Hypertable, and Cassandra. Accumulo began its development in 2008 and joined the Apache community in 2011.

Official Website: https://accumulo.apache.org/

268 questions
0
votes
0 answers

How do I combind two git projects (git twitter4) and (git accumulo) to build a project that uses both?

I am doing twitter analysis in java (making the switch) and putting results in accumulo. I found the git twitter4 project and there is the accumulo project. I am new at maven and git. I want to know how to: 1) Combine the projects without an IDE 2)…
Chris Rigano
  • 687
  • 1
  • 11
  • 23
0
votes
1 answer

Tests in error:test(org.apache.accumulo.examples.simple.filedata.ChunkInputFormatTest)

When I build the examples-simple maven project included in the accumulo-1.4.3-cdh43.tar.gz I am using netbeans set to a java platform of jdk1.6.0.32. I get test failures for Tests in error:…
Chris Rigano
  • 687
  • 1
  • 11
  • 23
0
votes
1 answer

Do I need to set the Java Platform (JDK) in netbeans if I am using the Pom.xml in accumulo-1.4.3?

I have opened/imported the accumulo "examples-simple" maven project into netbeans. Do I need to set the Java Platform? Properties indicate "Java SDK 7.1". I know that accumulo-1.4.3 runs on JDK 1.6.0. My current version is java version "1.6.0_32" I…
Chris Rigano
  • 687
  • 1
  • 11
  • 23
0
votes
0 answers

netbeans for linux java 1.6.0_32 for accumulo on Cloudera Support

I am trying to find a version of netbeans for linux java 1.6.0_32 for accumulo client development on cloudera so that I can have the same environment as my collegues. I would appreciate assistance with IDE specification and download. Development…
Chris Rigano
  • 687
  • 1
  • 11
  • 23
0
votes
1 answer

Trailing null (\x00) characters when writing text to Accumulo

I am trying to write the name of a file into Accumulo. I am using accumulo-core-1.43. For some reason, certain files seem to be written into Accumulo with trailing \x00 characters at the end of the name. The upload is coming through a Java servlet…
jfoo
  • 178
  • 10
0
votes
1 answer

Accumulo-Pig error - Connector info for AccumuloInputFormat can only be set once per job

Versions: Accumulo 1.5 Pig 0.10 Attempted: Read/write data in/into Accumulo from Pig, using accumulo-pig. Encountered an error - any insight into getting past this error is greatly appreciated. Switching to Accumulo 1.4 is not an option as we are…
Indra
  • 25
  • 6
0
votes
2 answers

Deleting a row in Accumulo using Pyaccumulo

I'm trying to delete a row using the RowDeletingIterator. I'm running Accumulo 1.5.0. Here's what I have writer = conn.create_batch_writer("my_table") mut = Mutation("1234") mut.put(cf="", cq="", cv="",…
Mr. S
  • 1,469
  • 2
  • 15
  • 27
0
votes
2 answers

Connecting from C# to Accumulo

I am new to working with Accumulo. I need to read/write data from a remote Accumulo through C#. The only code sample/documentation for C#, I have found is - Accumulo createBatchScanner range not working as expected I attempted to compile the code…
Indra
  • 25
  • 6
0
votes
2 answers

When excecuting the "accumullo /init" command I get an noClassDefFoundError in Hadoop

I am using hadoop.2.2.0 and when I try to initialize accumulo I get the following error. Hadoop and Zookeeper are running on this system. root@ps-ubuntuhost2:/usr/local/bin/accumulo-1.5.0/bin# ./accumulo init Thread "init" died null …
user2938885
  • 41
  • 7
0
votes
1 answer

accumulo - batchscanner: one result per range

So my general question is "Is it possible to have an Accumulo BatchScanner only pull back the first result per Range I give it?" Now some details about my use case as there may be a better way to approach this anyway. I have data that represent…
jeff
  • 4,325
  • 16
  • 27
0
votes
2 answers

how can i handle billion records effectivily

I have a performance issue, while handling billion records using select query,I have a table as CREATE TABLE `temp_content_closure2` ( `parent_label` varchar(2000) DEFAULT NULL, `parent_code_id` bigint(20) NOT NULL, `parent_depth` bigint(20)…
kumar
  • 2,905
  • 5
  • 22
  • 26
0
votes
1 answer

Is it possible to associate an instance of an object with one file while it's being mapped by a map-only mapred Job?

I want to use a HashSet that exists/works against one file while it's being mapped, and then is reset/recreated when the next file is being mapped. I have modified TextInputFormat to override isSplitable to return false, so that the file is not…
S.Huston
  • 254
  • 6
  • 18
0
votes
1 answer

@Value annotations inside my Java class don't load values from .properties file

Before asking this question I tried to follow the following questions which are similar: Injecting Properties using Spring & annotation @Value How can I inject a property value into a Spring Bean which was configured using annotations? Loading up…
erj2code
  • 301
  • 5
  • 9
  • 19
0
votes
1 answer

How does one use the Accumulo proxy with python bindings?

Looking for some help to set up the Accumulo proxy. The proxy readme points to ../readme for building and installing with the proxy server but ../readme doesn't say anything about the proxy :) my goal is to prototype a small python app that calls…
Miguel Pereira
  • 1,781
  • 16
  • 14
0
votes
2 answers

Accumulo - Getting a properly sorted Scanner result

Is there a means of sorting the entries attained from a Scanner? The problem I'm having is that I have suffix indices to alleviate duplicate row ids and when I scan I don't get a perfectly ascending ordered list. For instance, I get something that…
Mastergeek
  • 429
  • 1
  • 6
  • 16
1 2 3
…
17
18