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Questions tagged [riak]

Riak is a key/value data store written in Erlang. It implements principles from Amazon's Dynamo paper.

Riak is a NoSQL database implementing the principles from Amazon's Dynamo paper. Riak is designed to deliver maximum data availability by distributing data across multiple servers. As long as your Riak client can reach one Riak server, it should be able to write data.

While Riak is typically known as an eventually consistent system, beginning with version 2.0 it can be used either as an eventually or strongly consistent system, and these two approaches can be mixed and matched in a single cluster.

For more information please refer to:

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Unable to start Riak CS?

I am unable to start Riak CS? In the app.config for Riak, Riak CS. I've replaced the localhost IP address 127.0.0.1 with 0.0.0.0. Riak is running fine. I get a "pong" response. But Riak CS says "Node 'riak-cs@0.0.0.0' not responding to pings."
systemboot
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Bi-directional Map in Riak

I want to store a structure similar to bi-directional map in Riak. I have two buckets with inversed keys and values. I want to remove the record in the second bucket when it was removed from the first. As I understand, it can't be done with the…
Tolsi
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riak: stumped on a basho MapReduce challenge

Working through their MapReduce tutorial, and Basho posits a MR challenge here, given daily stock data for the GOOG ticker: Find the largest day for each month in terms of dollars traded, and subsequently the largest overall day. Hint: You will…
fox
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Exception in Riak Java store in bucket

I'm running the following simple java program with riak client 1.4.2, but it does not work. The program only runs for about 3 or 4 iterations and then it fail with an exception. import com.basho.riak.client.IRiakClient; import…
Sameera Kumarasingha
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Link a node to a png in Riak causing the json to not return

I ran curl -v -X PUT http://localhost:10018/riak/animals/polly?returnbody=ture -H "Content-Type: application/json" -d '{"nickname" : "Sweet Polly Purebred", "breed" : "Purebred"}' When I fetch /riak/animals/polly I get the expected: -…
quantumpotato
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Start RIAK DEV Nodes After Building From Source

I've downloaded and installed RIAK from GitHub, along with all necessary dependencies. RIAK install without issue. I ran the command make devrel to generate nodes 1 - 5 for development purposes. When I CD into each directory and execute the riak…
Paul Mooney
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riak node is not running

I installed riak version riak-1.4.6. I ran make rel then make devrel. rel/gen_dev dev1 rel/vars/dev_vars.config.src rel/vars/dev1_vars.config Generating dev1 - node='dev1@127.0.0.1' pbc=10017 http=10018 handoff=10019 (cd rel && ../rebar generate…
quantumpotato
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Riak "make devrel" ERROR: generate failed while processing

I'm attempting to follow the tutorial http://docs.basho.com/riak/latest/quickstart/ but can't get past the "make devrel" step. It ends in an error, and the dev/ directory is empty - it is supposed to contain stuff. The exact command is make devrel…
DarenW
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Riak make rel failed application validation with reason: missing_app_file

I installed riak from github, then ran: make rel And got this: s/node_package failed application validation with reason: {missing_app_file,"/User/foo/riak/deps/node_package"}. How do I fix this?
quantumpotato
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Ulimit error while starting Riak

I had installed RiakDB using this document. After installation i tried to start the Riak using the following command. But its giving some error. sudo riak start ###Error !!!! !!!! WARNING: ulimit -n is 1024; 4096 is the recommended…
karthick
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Riak Limitations

My website currently employs a system wherein the description for a particular post comes from memcache. If the memcache fails the system fetches the same data from the database. I wish to remove the database from the picture completely. For this I…
saurabhraje
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How do I perform Riak Solr search using the Java API

can I perform searches using Solr on Riak with the Java client I will need to insert the data in Java to support Solr search and then query it
Shimon Benattar
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Maximum records can be stored at Riak database

Can anyone give an example of maximum record limit in Riak database with specific hardware details? please help me in this case.I'm going to build a CDR information system. Will it be suitable to select Riak as my database?
Chanaka NZ
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Riak node terminated with I/0 error

My riak nodes are terminating unexpectedly with the following error. This thing started to happen after i made the following change. That's the only change i did. {riak_kv, [ {storage_backend, riak_kv_eleveldb_backend}, Error in…
Sameera Kumarasingha
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Does a Merkle tree have to be a perfect binary tree?

If so, what's the reason? I guess to keep it balanced? But is that so critical for Merkle trees?
neurite
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