Question

我的开发环境是centos7，hbase 1.2.5，happybase 1.1.0，python 2.7，PyCharm，hadoop 2.7.3，spark 2.1 我正在开发一个大数据软件。我需要将值放入HBase表中。值来自Spark RDD。以下是代码：

import happybase
from pyspark import SparkContext, SparkConf

connection = happybase.Connection('localhost') 
table = connection.table('tablename')
conf = SparkConf().setAppName("myFirstSparkApp").setMaster("local")
sc = SparkContext(conf=conf)
distFile = sc.textFile("/inputFilePath/")  
newLines = distFile.filter(lambda x: 'filter":' in x) 
newLines = newLines.map(lambda line:line.split('"'))
# The following line is working. Insert a row into the table.
table.put(b'row-key0', {'billCode:': '222', 'trayCode:': '222', 'pipeline:': '333'})
# But the following line is not working. what is wrong? Why?
newLines.foreach(lambda x: table.put(b'row-key', {'billCode:': x[7], 'trayCode:': x[3], 'pipeline:': x[11]}))

但最后一行代码无效。错误消息是：

ImportError：没有名为cybin的模块 pickle.PicklingError：无法序列化对象：ImportError：没有名为cybin的模块

我是spark + happybase + python的新开发者。怎么解决？请你帮忙。谢谢。

Answer 1

这是一个简单的例子。

import happybase
from pyspark import SparkContext, SparkConf
conf = SparkConf().setAppName("App").setMaster("local")
sc = SparkContext(conf=conf)
rdd = parallelize([("a","1"),("b","2")])
def func(x):
    conn = happybase.Connection('localhost')
    table = conn.table("table_name")
    table.put(x[0],{"cf:c":x[1]})
    conn.close()
rdd.foreach(func)

但不完美，你可以参考http://spark.apache.org/docs/latest/streaming-programming-guide.html#design-patterns-for-using-foreachrdd 祝你好运。

如何通过happybase将值放入hbase表？

1 个答案: