Firebase crashes while starting

[ayazici-vekend]

I was using a local emulator to develop my app, and i was starting the emulator with the following command:

firebase emulators:start --export-on-exit=./saved-data --import=./saved-data

In vscode i tried to write @(Alt + q) symbol but my hand slipped and instead i clicked ctrl + q, and it caused to quit vscode while firebase was still running. And now when i try to start the emulator with the same command it crashes due following reason taken from the debug.log of firestore:

 firestore: Firestore Emulator logging to firestore-debug.log {"metadata":{"emulator":{"name":"firestore"},"message":"Firestore Emulator logging to \u001b[1mfirestore-debug.log\u001b[22m"}}
[2021-06-12T16:40:50.883Z] Exception in thread "main"  {"metadata":{"emulator":{"name":"firestore"},"message":"Exception in thread \"main\" "}}
[2021-06-12T16:40:50.883Z] com.google.cloud.datastore.core.exception.DatastoreException: Failed to parse overall export metadata file
        at com.google.cloud.datastore.emulator.impl.ExportImportUtil.parseOverallMetadataFile(ExportImportUtil.java:229)
        at com.google.cloud.datastore.emulator.impl.ExportImportUtil.fetchEntities(ExportImportUtil.java:56)
        at com.google.cloud.datastore.emulator.firestore.CloudFirestore.main(CloudFirestore.java:89)
Caused by: java.io.FileNotFoundException: /home/ahmet/Documents/project-folder/backend/saved-data/firestore_export/firestore_export.overall_export_metadata (No such file or directory)
        at java.base/java.io.FileInputStream.open0(Native Method)
        at java.base/java.io.FileInputStream.open(FileInputStream.java:219)
        at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)

[samtstern]

@ayazici-vekend sounds like you got into a half-corrupted state by quitting the emulators during an export. If you just delete all the contents of the ./saved-data directory I think this will fix the crash on startup.

[Misal-Ambasta]

I also quit the local emulator in the mid, Now Its keep showing the same error again and again whenever I start my local emulator
firebase serve --only functions or firebase emulators:start --only functions

How can I reset my local emulators?

[ayazici-vekend]

Thank you very much @samtstern that's what i have guessed too. So I just recovered my previous project from git and it was solved, it seems some files went missing / deleted when quitted in the mid.

[samtstern]

@ayazici-vekend thanks for following up! I am going to also make a note for myself to improve this behavior in the future, but for now let's close this because your issue was fixed.