如何使用 confluent-kafka-python 从 Data Science Experience / Spark 即服务连接到 Message Hub？

Question

Bluemix MessageHub 文档将 python 用户指向融合的 kafka 库：

所以我尝试安装：

!pip install --user confluent-kafka

但是，我遇到了这个错误：

Collecting confluent-kafka
  Using cached confluent-kafka-0.9.1.2.tar.gz
Installing collected packages: confluent-kafka
  Running setup.py install for confluent-kafka ... - \ error
    Complete output from command /usr/local/src/bluemix_jupyter_bundle.v22/notebook/bin/python -u -c "import setuptools, tokenize;__file__='/gpfs/global_fs01/sym_shared/YPProdSpark/user/xxxx/notebook/tmp/pip-build-N3zDUh/confluent-kafka/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /gpfs/fs01/user/xxxx/notebook/tmp/pip-PyAwq2-record/install-record.txt --single-version-externally-managed --compile --user --prefix=:
    running install
    running build
    running build_py
    creating build
    creating build/lib.linux-x86_64-2.7
    creating build/lib.linux-x86_64-2.7/confluent_kafka
    copying confluent_kafka/__init__.py -> build/lib.linux-x86_64-2.7/confluent_kafka
    creating build/lib.linux-x86_64-2.7/confluent_kafka/kafkatest
    copying confluent_kafka/kafkatest/__init__.py -> build/lib.linux-x86_64-2.7/confluent_kafka/kafkatest
    copying confluent_kafka/kafkatest/verifiable_consumer.py -> build/lib.linux-x86_64-2.7/confluent_kafka/kafkatest
    copying confluent_kafka/kafkatest/verifiable_producer.py -> build/lib.linux-x86_64-2.7/confluent_kafka/kafkatest
    copying confluent_kafka/kafkatest/verifiable_client.py -> build/lib.linux-x86_64-2.7/confluent_kafka/kafkatest
    running build_ext
    building 'confluent_kafka.cimpl' extension
    creating build/temp.linux-x86_64-2.7
    creating build/temp.linux-x86_64-2.7/confluent_kafka
    creating build/temp.linux-x86_64-2.7/confluent_kafka/src
    gcc -pthread -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/usr/local/src/bluemix_jupyter_bundle.v22/notebook/include/python2.7 -c confluent_kafka/src/confluent_kafka.c -o build/temp.linux-x86_64-2.7/confluent_kafka/src/confluent_kafka.o
    In file included from confluent_kafka/src/confluent_kafka.c:17:0:
    confluent_kafka/src/confluent_kafka.h:20:32: fatal error: librdkafka/rdkafka.h: No such file or directory
     #include <librdkafka/rdkafka.h>
                                    ^
    compilation terminated.
    error: command 'gcc' failed with exit status 1

    ----------------------------------------
Command "/usr/local/src/bluemix_jupyter_bundle.v22/notebook/bin/python -u -c "import setuptools, tokenize;__file__='/gpfs/global_fs01/sym_shared/YPProdSpark/user/xxxx/notebook/tmp/pip-build-N3zDUh/confluent-kafka/setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __file__, 'exec'))" install --record /gpfs/fs01/user/xxxx/notebook/tmp/pip-PyAwq2-record/install-record.txt --single-version-externally-managed --compile --user --prefix=" failed with error code 1 in /gpfs/global_fs01/sym_shared/YPProdSpark/user/xxxx/notebook/tmp/pip-build-N3zDUh/confluent-kafka/

Answer 1

根据 confluent readme，您需要先安装 librdkafka 本机库，然后才能使用他们的 Python 客户端。

正如您在其他评论中发现的那样，它们是另一种纯 Python 库 kafka-python，您可能会发现它更易于用于 Bluemix 应用程序

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