A computer cluster is a set of connected systems that work together so that in many respects they can be viewed as a single system.
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Node.js multi-server cluster: how to share object in several nodes cluster
I want to create a cluster of node.js server in order to support many concurrency simultaneously, for a chat rooms applications. The servers hold information that needs to be shared between all nodes, ...
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11 views
Reduce stopws after map 100% and reduce 26%
I am executing a mapreduce program on multinode cluster to tokenize a sentence and remove stopwords from it, why exection after MAP 100% was reduced to 26% stops and remain as it is?
Data:text files ...
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HornetQ cluster node consumers
I have a HornetQ standalone cluster with 2 nodes and Mule ESB is configured to connect HornetQ Cluster discovery group.
I wrote a Mule Callback Listener which is consuming messages from HornetQ ...
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19 views
Remove nodes/relationships from Neo4j Cluster
I am using the 1.9 M03 version of Neo4j and the neo4j.rb gem for jruby and I have Neo4j HA mode active with 3 machines configured:
Instance 1 is responsible to create nodes/relationships through ...
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qmake fails using export with piped shell command
I have a problem using qmake (v3.82) on a open sun-grid engine (gridengine-GE2011.11) I've narrowed the problem down using the following makefile code:
export FOO = $(shell echo bar | sed ...
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27 views
SocketIO on a Node.js cluster
I have a standalone Node.js app which has SocketIO server that listens on a certain port, e.g. 8888. Now I am trying to run this app in a cluster and because cluster randomly assigns workers to ...
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8 views
secondary server heap size used in weblogic when primary server is in use
In our project we are using weblogic application server. We have 2 servers in one cluster and only primary server is in use. But our secondary server is using the maximum heap size which is shown in ...
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17 views
Is there a way asterisk reconnect calls when internet connection is missed
For being specific, I am using asterisk with a Heartbeat active/pasive cluster. There are 2 nodes in the cluster. Let's suppose Asterisk1 Asterisk2. Eveything is well configured in my cluster. When ...
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26 views
nodejs using cluster.setupMaster, send an object as argv
I've have just dived into NodeJS and I'm reading on taking advantage of all CPU's cores and spawning the process among all the available resources.
It seems like a pretty interesting topic, and I'm ...
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1answer
24 views
Cluster-aware Tomcat web application
I believe this task is not much exotic, but due to the lack of clustering experience I feel hard to find the answer.
Our web-app performs some background operations by schedule (data querying and ...
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1answer
26 views
Ehcache Replicated Cache not synchronizing at startup
I have an ehcache Cache replicated across two machines. The peers correctly find each other and replicate once both peers are started. However, if the 1st peer starts first, and receives several ...
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17 views
How does a JMS consumer work on a broker CLUSTER of Oracle Message Queue?
We have an application running in a GlassFish 3.1.2.2 cluster (two instances) that writes its results to "the_output_queue".
GlassFish sets up Message Queue as an embedded broker cluster, which in ...
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9 views
Tool for cluster process management
I have a computing cluster of 100 nodes, dedicated to run a single application on every node. I need some tool to monitor processes status, relaunch dead processes, reconfigure them on-the-fly ...
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1answer
19 views
Spark cluster fails on bigger input, works well for small
I'm playing with Spark. It is the default, pre-built distribution (0.7.0) from the website, with default config, cluster mode, one worker (my localhost). I read the docs on installing and everything ...
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1answer
27 views
Is there any tool to find at what time of the day hadoop cluster is usually free from load and submit job at that time daily
I need to schedule a job in our production cluster.I am trying to schedule it at a time when the cluster is expected to be free based on how cluster load was in past 30 days.Oozie doesn't have any ...
