mbrestore partial restore if one of the threads encounters an error during restore

:09:54,376] - [remote_util] [140735087852704] - INFO - running command /opt/membase/bin/mbrestore -a -p 11211 /tmp/mbbackuptestdefaultbucket-9cd8d437-968c-439c-90f4-7d883c0406f2/default-3.mb /tmp/mbbackuptestdefaultbucket-9cd8d437-968c-439c-90f4-7d883c0406f2/default-0.mb /tmp/mbbackuptestdefaultbucket-9cd8d437-968c-439c-90f4-7d883c0406f2/default-1.mb /tmp/mbbackuptestdefaultbucket-9cd8d437-968c-439c-90f4-7d883c0406f2/default-2.mb /tmp/mbbackuptestdefaultbucket-9cd8d437-968c-439c-90f4-7d883c0406f2/default
[2011-06-02 15:10:07,282] - [remote_util] [140735087852704] - INFO - command executed successfully
[2011-06-02 15:10:07,282] - [remote_util] [140735087852704] - ERROR - Error on key '309864a0-c1a6-424b-9e48-0a3c2aefba4e-40-40': Memcached error #132
[2011-06-02 15:10:07,283] - [remote_util] [140735087852704] - ERROR - Error on key '309864a0-c1a6-424b-9e48-0a3c2aefba4e-40-40': Memcached error #132
[2011-06-02 15:10:07,284] - [remote_util] [140735087852704] - ERROR - Exception in thread Thread-1 (most likely raised during interpreter shutdown):
[2011-06-02 15:10:07,284] - [remote_util] [140735087852704] - ERROR - Traceback (most recent call last):
[2011-06-02 15:10:07,284] - [remote_util] [140735087852704] - ERROR - File "/usr/lib/python2.7/threading.py", line 552, in __bootstrap_inner
[2011-06-02 15:10:07,285] - [remote_util] [140735087852704] - ERROR - File "/usr/lib/python2.7/threading.py", line 505, in run
[2011-06-02 15:10:07,285] - [remote_util] [140735087852704] - ERROR - File "/opt/membase/lib/python/mbrestore", line 93, in worker
[2011-06-02 15:10:07,286] - [remote_util] [140735087852704] - ERROR - <type 'exceptions.AttributeError'>: 'NoneType' object has no attribute 'interrupt_main'
[2011-06-02 15:10:07,286] - [remote_util] [140735087852704] - INFO - 1024
[2011-06-02 15:10:07,286] - [remote_util] [140735087852704] - INFO - 2048
[2011-06-02 15:10:07,286] - [remote_util] [140735087852704] - INFO - 3072
[2011-06-02 15:10:07,287] - [remote_util] [140735087852704] - INFO - 4096
[2011-06-02 15:10:07,287] - [remote_util] [140735087852704] - INFO - 5120
[2011-06-02 15:10:07,287] - [remote_util] [140735087852704] - INFO - 6144
[2011-06-02 15:10:07,287] - [remote_util] [140735087852704] - INFO - 7168
[2011-06-02 15:10:07,287] - [remote_util] [140735087852704] - INFO - 8192
[2011-06-02 15:10:07,288] - [remote_util] [140735087852704] - INFO - 9216
[2011-06-02 15:10:07,288] - [remote_util] [140735087852704] - INFO - 10240
[2011-06-02 15:10:07,288] - [remote_util] [140735087852704] - INFO - 11264
[2011-06-02 15:10:07,288] - [remote_util] [140735087852704] - INFO - 12288
[2011-06-02 15:10:07,289] - [remote_util] [140735087852704] - INFO - 13312
[2011-06-02 15:10:07,289] - [remote_util] [140735087852704] - INFO - 14336
[2011-06-02 15:10:07,289] - [remote_util] [140735087852704] - INFO - 15360
[2011-06-02 15:10:07,289] - [remote_util] [140735087852704] - INFO - 16384
[2011-06-02 15:10:07,290] - [remote_util] [140735087852704] - INFO - 17408
[2011-06-02 15:10:07,290] - [remote_util] [140735087852704] - INFO - 18432
[2011-06-02 15:10:07,290] - [remote_util] [140735087852704] - INFO - 19456
[2011-06-02 15:10:07,290] - [remote_util] [140735087852704] - INFO - 20480
[2011-06-02 15:10:07,291] - [remote_util] [140735087852704] - INFO - 21504
[2011-06-02 15:10:07,291] - [remote_util] [140735087852704] - INFO - 22528
[2011-06-02 15:10:07,291] - [remote_util] [140735087852704] - INFO - 23552
[2011-06-02 15:10:07,291] - [remote_util] [140735087852704] - INFO - 24576