我正在尝试将数据存储实体的备份恢复到在本地主机上运行的模拟器中。
我正在使用此位置的指南https://cloud.google.com/datastore/docs/tools/emulator-export-import https://cloud.google.com/datastore/docs/tools/emulator-export-import这就是我到目前为止所设法做到的。
#start the emulator
gcloud beta emulators datastore start --store-on-disk --data-dir "./datastore-emulator" --project=my-project
# set the environment
$(gcloud beta emulators datastore env-init)
# initiate the restore operation
curl -X POST localhost:8081/v1/projects/my-project:import \
-H 'Content-Type: application/json' \
-d '{"input_url":"/home/bogdan/workspace/myCopy/2019-08-19-23-00/2019-08-19-23-00.overall_export_metadata"}'
此时我可以看到模拟器检测到连接，这是日志片段
[datastore] Dev App Server is now running.
[datastore]
[datastore] The previous line was printed for backwards compatibility only.
[datastore] If your tests rely on it to confirm emulator startup,
[datastore] please migrate to the emulator health check endpoint (/). Thank you!
[datastore] The health check endpoint for this emulator instance is http://localhost:8081/Sep 02, 2019 3:45:11 PM io.gapi.emulators.grpc.GrpcServer$3 operationComplete
[datastore] INFO: Adding handler(s) to newly registered Channel.
[datastore] Sep 02, 2019 3:45:11 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
[datastore] INFO: Detected non-HTTP/2 connection.
[datastore] Sep 02, 2019 3:45:11 PM io.gapi.emulators.grpc.GrpcServer$3 operationComplete
[datastore] INFO: Adding handler(s) to newly registered Channel.
[datastore] Sep 02, 2019 3:45:11 PM io.gapi.emulators.netty.HttpVersionRoutingHandler channelRead
[datastore] INFO: Detected HTTP/2 connection.
等待大约5分钟后
[datastore] Exception in thread "grpc-default-executor-0" java.lang.OutOfMemoryError: GC overhead limit exceeded
[datastore] at java.util.Collections.unmodifiableList(Collections.java:1289)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$Path.<init>(OnestoreEntity.java:8573)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$Path.<init>(OnestoreEntity.java:8504)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$Path$1.parsePartialFrom(OnestoreEntity.java:10145)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$Path$1.parsePartialFrom(OnestoreEntity.java:10133)
[datastore] at com.google.protobuf.CodedInputStream$ArrayDecoder.readMessage(CodedInputStream.java:969)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$EntityProto.<init>(OnestoreEntity.java:13508)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$EntityProto.<init>(OnestoreEntity.java:13407)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$EntityProto$1.parsePartialFrom(OnestoreEntity.java:15888)
[datastore] at com.google.storage.onestore.v3.proto2api.OnestoreEntity$EntityProto$1.parsePartialFrom(OnestoreEntity.java:15876)
[datastore] at com.google.protobuf.AbstractParser.parsePartialFrom(AbstractParser.java:57)
[datastore] at com.google.protobuf.AbstractParser.parsePartialFrom(AbstractParser.java:20)
[datastore] at com.google.cloud.datastore.emulator.impl.LevelDBLogReaderChannel.readProtoMessage(LevelDBLogReaderChannel.java:65)
[datastore] at com.google.cloud.datastore.emulator.impl.ExportImportUtil.parseEntityProtoFile(ExportImportUtil.java:157)
[datastore] at com.google.cloud.datastore.emulator.impl.ExportImportUtil.fetchEntities(ExportImportUtil.java:59)
[datastore] at com.google.cloud.datastore.emulator.admin.v1.DatastoreAdminV1Emulator.importEntities(DatastoreAdminV1Emulator.java:115)
[datastore] at com.google.cloud.datastore.emulator.admin.v1.DatastoreAdminGrpcAdapter$1.importEntities(DatastoreAdminGrpcAdapter.java:55)
[datastore] at com.google.datastore.admin.v1.DatastoreAdminGrpc$MethodHandlers.invoke(DatastoreAdminGrpc.java:1040)
[datastore] at io.grpc.stub.ServerCalls$UnaryServerCallHandler$UnaryServerCallListener.onHalfClose(ServerCalls.java:171)
[datastore] at io.grpc.internal.ServerCallImpl$ServerStreamListenerImpl.halfClosed(ServerCallImpl.java:283)
[datastore] at io.grpc.internal.ServerImpl$JumpToApplicationThreadServerStreamListener$1HalfClosed.runInContext(ServerImpl.java:711)
[datastore] at io.grpc.internal.ContextRunnable.run(ContextRunnable.java:37)
[datastore] at io.grpc.internal.SerializingExecutor.run(SerializingExecutor.java:123)
[datastore] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[datastore] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[datastore] at java.lang.Thread.run(Thread.java:748)
[datastore] Sep 02, 2019 3:47:35 PM io.gapi.emulators.netty.HttpHandler$1 onError
[datastore] INFO: Exception when handling request: UNKNOWN
此外，数据库文件也不是创建于./datastore-emulator/WEB-INF/appengine-generated
