hbase monitoring

HBASE Basic StructureOne. Overview1. HBase Yes, HBase is some kind of nosql database, the only difference is that he supports massive amounts of data.Basic features of HBase:1) strong consistency of read and write, rather than "final consistency" (eventually consistent) data warehouse. Based on this,

1.1 Monitoring HBase Health1.1.1 Operating System1.1.1.1IOA. Cluster network IO, disk Io,hdfs IOThe larger the IO, the more file read and write operations. When the IO suddenly increases, it is possible that the 1.compact queue is large, and the cluster is undergoing a lot of compression operations.2. Executing a mapreduce jobThe data for a single machine can be viewed from the CDH front desk by viewing the

Ganglia is an open-source monitoring project initiated by UC Berkeley designed to measure thousands of nodes. Each computer runs a gmond daemon that collects and sends metric data (such as processor speed and memory usage. It is collected from the operating system and the specified host. Hosts that receive all metric data can display the data and pass the simplified form of the data to the hierarchy. Ganglia can be well expanded just because of this h

This article describes how to install hbase in standalone mode in Linux and how to connect to hbase during development using eclipse in windows. 1. Install the Linux system (Ubuntu 10.04 server) and install the additional open SSH-server. Machine name: ubuntu (CAT/etc/hostname, the result is UBUNTU) 2. install Java and set environment variables. Append the following three rows to the end of/etc/profile. Exp

guarantee that there is only one master in the cluster at any time2 storage of the addressing entrances of all region.3 real-time monitoring of the status of Region server, the region server's online and offline information to real-time notification to master4 stores the schema for HBase, including which table, which column family each tableMaster1 assigning region to region server2 responsible for load ba

Document directory Concepts Tall-narrow vs. Flat-wide tables Partial key scans Pagination Time Series Time ordered relations Implicit Versioning Custom Versioning This chapter mainly describes how to design hbase schema. We strongly recommend the following presentation for this topic, which is clearly written.First, I once again stressed that nosql cannot replace SQL. For non-bigdata, there is no doubt that SQL is more useful. for systems

Column=info:name, T imestamp=1421252020520, value=ted 1 row (s) in 0.3140 secondsThis problem is likely to be on the zookeeper, because your Java API is not directly interacting with HBase, is the first through zookeeper interaction, so I went to see the zookeeper log, I use tail monitoring zookeeper logTail-200f/var/log/zookeeper/zookeeper.logThen I run Java code, look at zookeeper have not reported anyth

HBase entry, hbaseI. Basic concepts of HBase 1. Row key The Row primary key can only rely on the Row key when querying HBase. HBase does not support conditional queries and other query methods similar to some mainstream databases. Reading records only depends on the Row primary key and performs global scanning, you can

The integration of hive and hbase is to use their own external API interface to communicate with each other, communication is mainly dependent on hive-hbase-handler.jar tools; hive-hbase-handler.jar in the hive lib package instead of in hbase Lib, hive0.6 version later; Create an h