Installing HPE Ezmeral Data Fabric Streams Python Client

The HPE Ezmeral Data Fabric Streams Python Client is a binding for librdkafka that is dependent on the HPE Ezmeral Data Fabric Streams C client (HPE Ezmeral Data Fabric Streams C Client is a distribution of librdkafka that works with HPE Ezmeral Data Fabric Streams).

Prerequisites

NOTE
As of release 5.2.1, you can create Python client applications for HPE Ezmeral Data Fabric Streams.
Verify that the following components are installed on the node:
  • HPE Ezmeral Data Fabric Streams C Client (mapr-librdkafka)
  • GNU Compiler Collection (GCC) is installed on the node.
  • Valid Python version
    • For a cluster running Release 7.9 or a lower version core, Python version 2.7.1 and above, up to Python version 3.6.x.
  • Python pip
  • python-devel (This is required for nodes with the Linux operating system.)
NOTE
For instructions on setting up the EEP repository, see Step 11: Install Ecosystem Components Manually.
IMPORTANT
Because the HPE Ezmeral Data Fabric Streams Python Client is dependent on the HPE Ezmeral Data Fabric Streams C Client, you must configure the HPE Ezmeral Data Fabric Streams C Client before using the HPE Ezmeral Data Fabric Streams Python Client. See Configuring the HPE Ezmeral Data Fabric Streams C Client.

Installation

NOTE
The Python client is available for Linux or Mac operating systems.
To install the HPE Ezmeral Data Fabric Streams Python Client using the Python Software Foundation, run the following command as root or using sudo:
  • On Linux: 
    pip install --global-option=build_ext --global-option="--library-dirs=/opt/mapr/lib" --global-option="--include-dirs=/opt/mapr/include/" mapr-streams-python
  • On Mac:
    pip install --user --global-option=build_ext --global-option="--library-dirs=/opt/mapr/lib" --global-option="--include-dirs=/opt/mapr/include/" mapr-streams-python
NOTE
The referenced package works on nodes with the Linux or the Mac operating system. The Python Client for HPE Ezmeral Data Fabric Streams is not supported on Windows.
Alternatively, you can install the HPE Ezmeral Data Fabric Streams Python Client via the HPE Ezmeral Data Fabric package repository: 
https://package.ezmeral.hpe.com/releases/MEP/<MEP version>/mac/mapr-streams-python-<version>.tar.gz

Troubleshooting Mac OS Installation

If you install the HPE Ezmeral Data Fabric Streams Python Client on a Mac without the --user flag, you may encounter a "Not Permitted" error, signifying that you don't have permission to create a LICENSE file. The error will look similar to the following:
Copying LICENSE -> /System/Library/Frameworks/Python.framework/Versions/2.7/
                error: [Error 1] Operation not permitted:
                '/System/Library/Frameworks/Python.framework/Versions/2.7/LICENSE'
To fix this issue, execute the following steps. These steps apply to users with a new Mac OS Sierra version 10.12.5.
  1. Reboot your Mac while simultaneously holding the Command and R keys to go into Mac OS X Recovery mode.
  2. Select Utilities, and then Terminal.
  3. Type csrutil disable. A message will pop up, informing you that your System Integrity Protection (SIP) has been sucessfully disabled.
  4. Reboot your Mac again.
  5. Go into the Terminal and execute the following command as the root user:
    pip install --global-option=build_ext  --global-option="--library-dirs=/opt/mapr/lib" --global-option="--include-dirs=/opt/mapr/include/" mapr-streams-python
  6. Once the script runs successfully, reboot your Mac while holding the Command and R keys. You will go into Mac OS X Recovery mode.
  7. Select Utilities, and then Terminal.
  8. Type csruntil enable to enable your SIP.
NOTE
To avoid this error, consider using a virtual Python environment or the --user flag.