Trying to import a compressed confluence cloud backup to our server. The compressed file is 63gb. The import failed after about 25 minutes. The error read
Import failed. Check your server logs for more information. Error unzipping file: Unexpected end of ZLIB input stream
I am having the same problem. My backup file is a space data I want to restore in another confluence instance. It has about 2gb. I tried through upload and also placing the zip into the restore folder. Both give me the same error message: Error unzipping file: Unexpected end of ZLIB input stream. This file was exported through Confluence interface.
I suggest turning off compression in Confluence prior to the import. I found a JDK bug that indicates that GZip compression can cause that error: Unexpected end of ZLIB when using GZIP on some files
The bug is intermittent but we could be running into something similar.
To turn off compression in Confluence, go to Admin>General Configuration, scroll down to the bottom, click Edit on the right, and uncheck the box next to Compress HTTP Responses.
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