python使用happybase批量的操作hbase
最近在跑任务的回溯,发现有时候,速度会很慢 ,一开始确定到了 是hbase就起了一个公用的thrift,大家最近也都在导数据,搞得thrift总是挂掉 。 后来在集群中的其他hbase上起了Thrift服务,每个业务用自己的接口,这样能稳定了不少。 既然问题已经到这里了,
最近在跑任务的回溯,发现有时候,速度会很慢 ,一开始确定到了 是hbase就起了一个公用的thrift,大家最近也都在导数据,搞得thrift总是挂掉 。 后来在集群中的其他hbase上起了Thrift服务,每个业务用自己的接口,这样能稳定了不少。
既然问题已经到这里了,就要想方设法介绍链接和频繁的获取数据,回溯任务会涉及到两个批量的任务,一个是hbase的获取网页信息的,另一个是把信息推送到
redis分析队列里面。 关于redis的长连接和批量操作已经完成,现在要改hbase的批量操作。
看了下happybase的文档, 一个是rows ,也就是数据的批量的get,还有一个是batch,这个是批量的操作,类似一个操作链条,相当于我把一系列的动作放到list里面,然后一次性的推到thrift执行。 。
from buzz.lib.hbase import hb #xiaorui.cc list = ['fffec611be1150a3c6ec47d16243170f', 'fffec64d36e2afb9c801f533555e03d8', 'ffffc8f782fc44d53a05a090b175f7f8', 'ffffcd05483697128e426ac9a5882d4d', 'ffffef6a5889cecfd67e49c4b0a0e3ab', 'fffff003b4e8328a002a09140afdf662', 'fffff0503298c2e8acfa2146f5028f76', 'fffff09d26c34af9e9286b7cfd4354d6', 'fffff0d15acad09af4392520cbb496a5', 'fffff10b7c949bee275d6ee5f2c411c6', 'fffff15c658b773719f6c6482c03c6fe', 'fffff16d18f5fd8ae5a8dfe84ef43b63', 'fffffb9285cb2b875276061bc808a23c', 'fffffbb06b87214a6aad714e86d69d31', 'fffffbb17d235d16ad041992699eba4b', 'fffffbb495afa6cb5e9decd909ff4026', 'fffffbc24f6db511617fb5a1905f1597', 'fffffbcbe880e4cb270dd268e237fc96', 'fffffc499edcbda7a38adf10840c3a6f', 'fffffe66fe54cc66918fa59dd7914841', 'fffffe9249c4c260277884fb5ece92ad', 'fffffe9d05f6cd2d760270947085e970', 'ffffff2b4089a09756bb85b181f9f718', 'ffffffed28fd8493e9dbbe60a3123af3'] print len(list) for i in list: print i hb.get(i, False) print 'many get' table = hb.get_table() columns = ['bz:url', 'src:html'] row = table.rows(list, columns=columns)
happybase 不管是文档还是对于一些异常的处理都要比原生的thrift python api 要强的。
这里在放一个happybase的小demo ,供大家学习。
import happybase connection = happybase.Connection('h11', compat='0.90') connection.open() print connection.tables() ''' connection.create_table( 'mytable', {'cf1': dict(max_versions=10), 'cf2': dict(max_versions=1, block_cache_enabled=False), 'cf3': dict(), # use defaults } )''' table = connection.table('test') row = table.row('row1', columns=['data:1']) print row['data:1'] for key, data in table.scan(): print key, data connection.close()
原文地址:python使用happybase批量的操作hbase, 感谢原作者分享。

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