我试图从IBM数据科学实验连接到IBM的云对象存储:没有文件系统的方案:COS
access_key = 'XXX'
secret_key = 'XXX'
bucket = 'mybucket'
host = 'lon.ibmselect.objstor.com'
service = 'mycos'
sqlCxt = SQLContext(sc)
hconf = sc._jsc.hadoopConfiguration()
hconf.set('fs.cos.myCos.access.key', access_key)
hconf.set('fs.cos.myCos.endpoint', 'http://' + host)
hconf.set('fs.cose.myCos.secret.key', secret_key)
hconf.set('fs.cos.service.v2.signer.type', 'false')
obj = 'mydata.tsv.gz'
rdd = sc.textFile('cos://{0}.{1}/{2}'.format(bucket, service, obj))
print(rdd.count())
这将返回:
Py4JJavaError: An error occurred while calling z:org.apache.spark.api.python.PythonRDD.collectAndServe.
: java.io.IOException: No FileSystem for scheme: cos
我猜我需要使用基于storator docs的'cos'方案。但是,错误提示stocator不可用或者是旧版本?
任何想法?
更新1:
我也曾尝试以下操作:
sqlCxt = SQLContext(sc)
hconf = sc._jsc.hadoopConfiguration()
hconf.set('fs.cos.impl', 'com.ibm.stocator.fs.ObjectStoreFileSystem')
hconf.set('fs.stocator.scheme.list', 'cos')
hconf.set('fs.stocator.cos.impl', 'com.ibm.stocator.fs.cos.COSAPIClient')
hconf.set('fs.stocator.cos.scheme', 'cos')
hconf.set('fs.cos.mycos.access.key', access_key)
hconf.set('fs.cos.mycos.endpoint', 'http://' + host)
hconf.set('fs.cos.mycos.secret.key', secret_key)
hconf.set('fs.cos.service.v2.signer.type', 'false')
service = 'mycos'
obj = 'mydata.tsv.gz'
rdd = sc.textFile('cos://{0}.{1}/{2}'.format(bucket, service, obj))
print(rdd.count())
然而,这一次的反应是:
Py4JJavaError: An error occurred while calling z:org.apache.spark.api.python.PythonRDD.collectAndServe.
: java.io.IOException: No object store for: cos
at com.ibm.stocator.fs.ObjectStoreVisitor.getStoreClient(ObjectStoreVisitor.java:121)
...
Caused by: java.lang.ClassNotFoundException: com.ibm.stocator.fs.cos.COSAPIClient
不幸的是,这并没有奏效。我已更新我的问题以反映这一点。 –
@ChrisSnow是的,但现在它不是一个配置问题,但库缺失。请参阅最新的答案。 – Mariusz