自从从旧的应用引擎迁移到谷歌云平台后，我在使用appcfg.py从我的应用下载数据时遇到了一些麻烦。这是我输入的命令：
appcfg.py download_data --config_file='directory/exp/bulkloader.yaml' --filename=rawdata.csv --kind=DataObject --url=http://myapp.appspot.com/_ah/remote_api
这是输出：
08:12 AM Downloading data records.
[INFO ] Logging to bulkloader-log-20160608.081204
[INFO ] Throttling transfers:
[INFO ] Bandwidth: 250000 bytes/second
[INFO ] HTTP connections: 8/second
[INFO ] Entities inserted/fetched/modified: 20/second
[INFO ] Batch Size: 10
[INFO ] Opening database: bulkloader-progress-20160608.081204.sql3
[INFO ] Opening database: bulkloader-results-20160608.081204.sql3
[INFO ] Connecting to myapp.appspot.com/_ah/remote_api
[INFO ] Downloading kinds ['DataObject']................................................................................................................................................................................................................................................................................................................
[INFO ] An error occurred. Shutting down.........
[ERROR ] [WorkerThread-9] WorkerThread:
Traceback (most recent call last):
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/adaptive_thread_pool.py", line 172, in WorkOnItems
status, instruction = item.PerformWork(self.__thread_pool)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 750, in PerformWork
transfer_time = self._TransferItem(thread_pool)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 1156, in _TransferItem
self, retry_parallel=self.first)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 1447, in GetEntities
results = self._QueryForPbs(query)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 1404, in _QueryForPbs
result_pb)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 95, in MakeSyncCall
return stubmap.MakeSyncCall(service, call, request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 329, in MakeSyncCall
rpc.CheckSuccess()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/apiproxy_rpc.py", line 157, in _WaitImpl
self.request, self.response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 286, in MakeSyncCall
handler(request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 318, in _Dynamic_RunQuery
'datastore_v3', 'RunQuery', query, query_result)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 201, in MakeSyncCall
self._MakeRealSyncCall(service, call, request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 228, in _MakeRealSyncCall
response_pb.ParseFromString(encoded_response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 140, in ParseFromString
self.MergeFromString(s)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 152, in MergeFromString
self.MergePartialFromString(s)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 168, in MergePartialFromString
self.TryMerge(d)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_pb.py", line 770, in TryMerge
d.skipData(tt)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 677, in skipData
raise ProtocolBufferDecodeError, "corrupted"
ProtocolBufferDecodeError: corrupted
[ERROR ] [WorkerThread-4] WorkerThread:
Traceback (most recent call last):
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/adaptive_thread_pool.py", line 172, in WorkOnItems
status, instruction = item.PerformWork(self.__thread_pool)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 750, in PerformWork
transfer_time = self._TransferItem(thread_pool)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 1156, in _TransferItem
self, retry_parallel=self.first)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 1447, in GetEntities
results = self._QueryForPbs(query)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/tools/bulkloader.py", line 1404, in _QueryForPbs
result_pb)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 95, in MakeSyncCall
return stubmap.MakeSyncCall(service, call, request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/apiproxy_stub_map.py", line 329, in MakeSyncCall
rpc.CheckSuccess()
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/api/apiproxy_rpc.py", line 157, in _WaitImpl
self.request, self.response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 286, in MakeSyncCall
handler(request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 318, in _Dynamic_RunQuery
'datastore_v3', 'RunQuery', query, query_result)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 201, in MakeSyncCall
self._MakeRealSyncCall(service, call, request, response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_stub.py", line 228, in _MakeRealSyncCall
response_pb.ParseFromString(encoded_response)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 140, in ParseFromString
self.MergeFromString(s)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 152, in MergeFromString
self.MergePartialFromString(s)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 168, in MergePartialFromString
self.TryMerge(d)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/appengine/ext/remote_api/remote_api_pb.py", line 770, in TryMerge
d.skipData(tt)
File "/Applications/GoogleAppEngineLauncher.app/Contents/Resources/GoogleAppEngine-default.bundle/Contents/Resources/google_appengine/google/net/proto/ProtocolBuffer.py", line 673, in skipData
raise ProtocolBufferDecodeError, "corrupted"
ProtocolBufferDecodeError: corrupted
.[ERROR ] Error in WorkerThread-4: corrupted
[ERROR ] Error in WorkerThread-5: HTTP Error 401: Unauthorized Too many auth attempts.
[ERROR ] Error in WorkerThread-9: corrupted
[INFO ] Have 3095 entities, 0 previously transferred
[INFO ] 3095 entities (15070507 bytes) transferred in 391.3 seconds
我非常喜欢这个菜鸟，所以这可能是一个非常简单的解决方案。关于如何解决这个问题的任何想法都将非常感激。
干杯， 添
答案 0 :(得分：0)
我知道这是一个老问题，但我刚遇到同样的问题。这似乎与线程有关。
我已经能够通过在appcfg命令行中专门设置线程数为1来解决它：
appcfg.py download_data -A APP-ID --url=http://APP-ID.appspot.com/_ah/remote_api/ --filename=data.db --num_threads=1
下载数据需要更长时间，但成功没有错误。