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https://issues.apache.org/jira/browse/PHOENIX-6863?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Istvan Toth updated PHOENIX-6863:
---------------------------------
Release Note:
When using an older 3.x version of the python protobuf library, and it uses the
'python' implementation instead of the 'cpp' implementation, phoenixdb will
fail with the following error message:
AttributeError: 'NoneType' object has no attribute 'enum_types_by_name'
This usually happens when running on Python 2, as 3.17.3 is the last protobuf
python library version that supports Python 2.
To work around the problem, install the C protobuf library "libprotobuf.so" on
the system, then reinstall the python protobuf library with the
"pip uninstall protobuf;pip install protobuf"
command.
The protobuf C library is available pre-packaged in most distributions.
> PhoenixDB 1.2+ doesn't work with Python2 on some systems
> --------------------------------------------------------
>
> Key: PHOENIX-6863
> URL: https://issues.apache.org/jira/browse/PHOENIX-6863
> Project: Phoenix
> Issue Type: Bug
> Components: python
> Affects Versions: python-phoenixdb-1.2.1
> Reporter: Istvan Toth
> Assignee: Istvan Toth
> Priority: Major
>
> On some systems we hit a protobuf bug which causes the following error when
> importing phoenixdb:
> {noformat}
> (env) [root@aglhue0124-1 ~]# python
> Python 2.7.5 (default, Jul 13 2018, 13:06:57)
> [GCC 4.8.5 20150623 (Red Hat 4.8.5-28)] on linux2
> Type "help", "copyright", "credits" or "license" for more information.
> >>> import phoenixdb
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> File
> "/opt/cloudera/parcels/CDH-7.2.17-1.cdh7.2.17.p0.36938352/lib/hue/build/env/lib/python2.7/site-packages/phoenixdb-1.2.1-py2.7.egg/phoenixdb/__init__.py",
> line 19, in <module>
> from phoenixdb import errors, types
> File
> "/opt/cloudera/parcels/CDH-7.2.17-1.cdh7.2.17.p0.36938352/lib/hue/build/env/lib/python2.7/site-packages/phoenixdb-1.2.1-py2.7.egg/phoenixdb/types.py",
> line 21, in <module>
> from phoenixdb.avatica.proto import common_pb2
> File
> "/opt/cloudera/parcels/CDH-7.2.17-1.cdh7.2.17.p0.36938352/lib/hue/build/env/lib/python2.7/site-packages/phoenixdb-1.2.1-py2.7.egg/phoenixdb/avatica/__init__.py",
> line 16, in <module>
> from .client import AvaticaClient # noqa: F401
> File
> "/opt/cloudera/parcels/CDH-7.2.17-1.cdh7.2.17.p0.36938352/lib/hue/build/env/lib/python2.7/site-packages/phoenixdb-1.2.1-py2.7.egg/phoenixdb/avatica/client.py",
> line 27, in <module>
> from phoenixdb.avatica.proto import common_pb2, requests_pb2,
> responses_pb2
> File
> "/opt/cloudera/parcels/CDH-7.2.17-1.cdh7.2.17.p0.36938352/lib/hue/build/env/lib/python2.7/site-packages/phoenixdb-1.2.1-py2.7.egg/phoenixdb/avatica/proto/common_pb2.py",
> line 36, in <module>
> _STATEMENTTYPE = DESCRIPTOR.enum_types_by_name['StatementType']
> AttributeError: 'NoneType' object has no attribute 'enum_types_by_name'
> {noformat}
> There are several error reports for this behaviour with the new using the
> files generated by the new protoc with python2, but the fix is not available
> in a version that is compatible with Python2.
> We don't see this error when running our dockerized test suite with Python2.
> We need to understand the issue, and figure out a solution.
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