随笔分类 - hbase
摘要:版本说明Hadoop1.0.1HBase 0.94.9Hive 0.8.1一、Hive over HBase1. 拷贝hbase-0.94.9.jar、zookeeper-3.4.5.jar、protobuf-java-2.4.0a.jar到hive/lib下。注意:如何hive/lib下已经存在这两个文件的其他版本(例如zookeeper-3.3.1.jar),建议删除后使用hbase下的相关版本。2. 修改hive/conf下hive-site.xml文件(红色部分) hive.metastore.local true ja...
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摘要:本文转自:http://www.orzota.com/sql-for-hbase/HBase provides random, read-write access to Big Data stored in very large tables as a distributed columnar store. HBase thus gained immediately popularity as a Big Data technology that unlike Hadoop which was primarily used in the backend data warehousing inf
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摘要:本文转自http://phoenix-hbase.blogspot.com/Today the Phoenix blog is brought to you by my esteemed colleague and man of many hats, Mujtaba Chohan, who today is wearing his performance engineer hat.SKIP SCANPhoenix 1.2uses a Skip Scan for intra-row scanning which allows for significant performance improve
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摘要:淘宝的hbase规模:1、基于0.90.3;2、10个独立集群,大约300台机器;3、机器配置:16 core,24G/48G,SATA 1T*12/SAS 300G *12;4、大约200k ops/sec,70%写,30%读。遇到的问题:1、region书越来越多,每秒写的速度会下降很快(8000降到2000)--->解决办法:将锁机制改为“无锁”。2、regionServerOOM(内存溢出)--->原因1:rowkey设计问题 原因2:setMaxFileSize太大,解压会使用近双倍的空间 原因3:region太多3、.meta表空洞--->原因:split失败,数
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