How to: Logstash to Kafka to rsyslog (Integration Example) - Sematext
This recipe is similar to the previous rsyslog + Redis + Logstash one, except that we’ll use Kafka as a central buffer and connecting point instead of Redis. You’ll have more of the same advantages: rsyslog is light and crazy-fast, including when you want it to tail files and parse unstructured data (see the Apache logs + rsyslog + Elasticsearch recipe)Kafka is awesome at buffering thingsLogstash
Solr vs Elasticsearch: Performance Differences & More - Sematext
“Solr or Elasticsearch?”…well, at least that is the common question we hear from Sematext’s consulting services clients and prospects. Which one is better, Solr or Elasticsearch? Which one is faster? Which one scales better? Which one is easier to manage? Which one should we use? Is there any advantage to migrating from Solr to Elasticsearch? – and the list goes on. These are all great questions,
HBase Backup Options - Sematext
If you are thinking about using HBase you will likely want to understand HBase backup options. I know we did, so let us share what we found. Please let us know what we missed and what you use for HBase backup! Export You could export your tables using the Export (org.apache.hadoop.hbase.mapreduce.Export) MapReduce job that will export the table data into a Sequence File on HDFS. This was implem
HBase Performance Monitoring
Infrastructure Monitoring Full Stack Infrastructure MonitoringMap and monitor your whole infrastructure in real-time with Sematext Monitoring tools, on-premise or in the cloud. Cloud-ready IntegrationsNumerous integrations let you collect and report metrics and events across your whole stack. Get a real-time view of your enterprise or cloud infrastructure.Get started in minutes with out-of-the-box
Search Analytics: Hadoop World Presentation - Sematext
After our Lucene Revolution talk in Boston, we got ready for last week’s Hadoop World conference in New York. Like at the Lucene Revolution, we presented to a packed room of 200+ people. The topic of our talk was the Search Analytics tool we’ve built with the help of Flume, HBase, MapReduce, and other open-source tools, and which are now starting to use for search-hadoop.com and search-lucene.com
Configuring HBase Memstore: What You Should Know - Sematext
In this post we discuss what HBase users should know about one of the internal parts of HBase: the Memstore. Understanding underlying processes related to Memstore will help to configure HBase cluster towards better performance. HBase MemstoreLet’s take a look at the write and read paths in HBase to understand what Memstore is, where how and why it is used. Memstore Usage in HBase Read/Write Paths
Sematext Cassandra Monitoring | Performance Monitoring Tool
What you get Detect Cassandra Performance Issues FasterSematext Monitoring makes life simpler by putting all Apache Cassandra metrics, logs, dashboards, and alerts at your fingertips. It’s an all-in-one solution with all the tools that you need to troubleshoot Cassandra node performance and health. Spot slow nodes that can degrade the responsiveness of the whole Cassandra clusterGet alerted on exc
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Mahout Digest, October 2010 - Sematext
Sematext at Hadoop World: Search Analytics with Flume and HBase - Sematext
Lucene and Solr Search Auto-Complete
Nutch Digest, March 2010 - Sematext
Apache HBase Monitoring
Solr Digest, January 2010 - Sematext