Couchbase Server

cbrestore, cbtransfer exit with ImportError: No module named zlib if python installation on the box does not have zlib library ( when python is built from source )

Details

  • Type: Bug Bug
  • Status: Resolved Resolved
  • Priority: Major Major
  • Resolution: Fixed
  • Affects Version/s: 2.0
  • Fix Version/s: 2.0
  • Component/s: documentation
  • Security Level: Public

Description

build 1965

./cbrestore
Traceback (most recent call last):
  File "/opt/couchbase/lib/python/cbrestore", line 8, in <module>
    import pump_transfer
  File "/opt/couchbase/lib/python/pump_transfer.py", line 10, in <module>
    import pump
  File "/opt/couchbase/lib/python/pump.py", line 14, in <module>
    import zlib
ImportError: No module named zlib

by default zlib module is disabled in python, it can be enabled using option --with-zlib when configure python.

but user at least should be notified about this requirements for cbrestore


Activity

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Andrei Baranouski added a comment -
./cbtransfer
Traceback (most recent call last):
  File "/opt/couchbase/lib/python/cbtransfer", line 25, in <module>
    import pump_transfer
  File "/opt/couchbase/lib/python/pump_transfer.py", line 10, in <module>
    import pump
  File "/opt/couchbase/lib/python/pump.py", line 14, in <module>
    import zlib
ImportError: No module named zlib
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Andrei Baranouski added a comment - ./cbtransfer Traceback (most recent call last):   File "/opt/couchbase/lib/python/cbtransfer", line 25, in <module>     import pump_transfer   File "/opt/couchbase/lib/python/pump_transfer.py", line 10, in <module>     import pump   File "/opt/couchbase/lib/python/pump.py", line 14, in <module>     import zlib ImportError: No module named zlib
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Steve Yen added a comment -
HI Andrei,
Can you add more environment info -- which O/S and which python version?

The thought is to understand how common zlib-less python is.

Thanks,
Steve
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Steve Yen added a comment - HI Andrei, Can you add more environment info -- which O/S and which python version? The thought is to understand how common zlib-less python is. Thanks, Steve
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Andrei Baranouski added a comment -
it happens on CentOS release 5.7 but seems like on these hosts default python was upgrade from Python 2.4 to Python 2.7


[root@localhost bin]# python
Python 2.7 (r27:82500, Jul 26 2012, 13:27:06)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-51)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import zlib
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named zlib
>>> exit()
[root@localhost bin]# /usr/bin/python2.4
Python 2.4.3 (#1, Sep 21 2011, 19:55:41)
[GCC 4.1.2 20080704 (Red Hat 4.1.2-51)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import zlib


This means that the system has python2.4 with zlib by default but if user upgrade python without zlib configuration he will have these issues.
This means that the system
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Andrei Baranouski added a comment - it happens on CentOS release 5.7 but seems like on these hosts default python was upgrade from Python 2.4 to Python 2.7 [ root@localhost bin]# python Python 2.7 (r27:82500, Jul 26 2012, 13:27:06) [GCC 4.1.2 20080704 (Red Hat 4.1.2-51)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import zlib Traceback (most recent call last):   File "<stdin>", line 1, in <module> ImportError: No module named zlib >>> exit() [ root@localhost bin]# /usr/bin/python2.4 Python 2.4.3 (#1, Sep 21 2011, 19:55:41) [GCC 4.1.2 20080704 (Red Hat 4.1.2-51)] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import zlib This means that the system has python2.4 with zlib by default but if user upgrade python without zlib configuration he will have these issues. This means that the system
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Farshid Ghods added a comment -
this occured on a system where python 2.7 was built from source instead of installation of standard packages which include zlib.

going to make this bug a release note and assign to docs team
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Farshid Ghods added a comment - this occured on a system where python 2.7 was built from source instead of installation of standard packages which include zlib. going to make this bug a release note and assign to docs team
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MC Brown added a comment -
An entry has been added to the release notes as a known issue
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MC Brown added a comment - An entry has been added to the release notes as a known issue

People

  • Assignee:
    MC Brown
    Reporter:
    Andrei Baranouski
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Dates

  • Created:
    Updated:
    Resolved: