Github user stephendotcarter commented on the issue:
https://github.com/apache/incubator-madlib/pull/70
Returning elements as str does not work when comparing different versions
on line and is causing the install to fail on Greenplum 4.3.10:
```
if _get_rev_num(match_details.group(1)) >= _get_rev_num('4.3.5'):
return '4.3ORCA'
```
This evaluates as:
```
>>> ['4','3','10'] > ['4','3','5']
False
```
They need to be int for the comparison to work:
```
>>> [4,3,10] > [4,3,5]
True
```
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