I just set up a new Mattermost server using the omnibus installation method.
Following along with Migrate from Slack, I’ve managed to export the slack data.
Importing mattermost-bulk-import.zip
using sudo mmctl --local import process --bypass-upload /home/ubuntu/mattermost-bulk-import.zip
results in the server crashing, along with some errors:
ID: zb7t4fbpnjnriyw73e6mm4nr3e
Type: import_process
Status: error
Created: 2025-03-07 15:36:01 +0000 UTC
Started: 2025-03-07 15:36:11 +0000 UTC
Data: map[error:Unable to update the job. extract_content:true import_file:/home/ubuntu/mattermost-bulk-import.zip local_mode:true]
I was wondering if the file was too large (600+MB), so I used mmimportjs
to break the file into small chunks (I modified the code to do 500 line chunks for diagnostics.
Running sudo mmctl --local import process --bypass-upload 000001-mattermost_import.jsonl
results in Import process job successfully created, ID: wpoxomezkt84xjhn9s1aekxyoc
Using sudo mmctl --local import job show wpoxomezkt84xjhn9s1aekxyoc
shows:
ID: wpoxomezkt84xjhn9s1aekxyoc
Type: import_process
Status: error
Created: 2025-03-07 15:49:03 +0000 UTC
Started: 2025-03-07 15:49:12 +0000 UTC
Data: map[error:Unable to update the job. extract_content:true import_file:/home/ubuntu/2025-03-07T15:43:36/000001-mattermost_import.jsonl local_mode:true]
Looking into the server logs, I see that that job fails with the log event:
{
"caller": "jobs/jobs.go:230",
"job": {
"create_at": 1741362543914,
"data": {
"error": "Unable to update the job.",
"extract_content": "true",
"import_file": "/home/ubuntu/2025-03-07T15:43:36/000001-mattermost_import.jsonl",
"local_mode": "true"
},
"id": "wpoxomezkt84xjhn9s1aekxyoc",
"last_activity_at": 1741362552878,
"priority": 0,
"progress": 0,
"start_at": 1741362552878,
"status": "in_progress",
"type": "import_process"
},
"job_create_at": "Mar 7 15:49:03.914",
"job_id": "wpoxomezkt84xjhn9s1aekxyoc",
"job_type": "import_process",
"level": "error",
"msg": "Unhandled panic in job",
"panic": "runtime error: invalid memory address or nil pointer dereference",
"stack": "goroutine 239 [running]:\nruntime/pprof.writeGoroutineStacks({0x5579b00, 0xc0020803a0})\n\truntime/pprof/pprof.go:743 +0x6a\nruntime/pprof.writeGoroutine({0x5579b00?, 0xc0020803a0?}, 0x0?)\n\truntime/pprof/pprof.go:732 +0x25\nruntime/pprof.(*Profile).WriteTo(0x48dd3e2?, {0x5579b00?, 0xc0020803a0?}, 0x0?)\n\truntime/pprof/pprof.go:369 +0x14b\ngithub.com/mattermost/mattermost/server/v8/channels/jobs.(*JobServer).HandleJobPanic(0xc001a4e360, {0x55ac8c8, 0xc001dd0c30}, 0xc0035025a0)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/jobs.go:229 +0xae\npanic({0x42d6100?, 0x7b154a0?})\n\truntime/panic.go:770 +0x132\ngithub.com/mattermost/mattermost/server/v8/channels/jobs/import_process.MakeWorker.func2({0x55ac8c8?, 0xc001dd0c30?}, 0xc0035025a0)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/import_process/worker.go:61 +0x5ed\ngithub.com/mattermost/mattermost/server/v8/channels/jobs.(*SimpleWorker).DoJob(0xc001e28190, 0xc0054dd080)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/base_workers.go:94 +0x3c6\ngithub.com/mattermost/mattermost/server/v8/channels/jobs.(*SimpleWorker).Run(0xc001e28190)\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/base_workers.go:53 +0xc5\ncreated by github.com/mattermost/mattermost/server/v8/channels/jobs.(*Workers).Start in goroutine 1\n\tgithub.com/mattermost/mattermost/server/v8/channels/jobs/workers.go:52 +0x12b\n\ngoroutine 1 [chan receive, 12 minutes]:\ngithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands.runServer(0xc00124a230, 0xc00003fb00)\n\tgithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands/server.go:115 +0x225\ngithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands.serverCmdF(0x7bad940, {0x48ca4f2?, 0x4?, 0x48ca4c6?})\n\tgithub.com/mattermost/mattermost/server/v8/cmd/mattermost/commands/server.go:57 +0x10a\ngithub.com/spf13/cobra.(*Command).execute(0x7bad940, {0xc000102060, 0x0, 0x0})\n\tgithub.com/spf13/cobra@v1.8.1/command.go:985 +0xaca\ngithub.com/spf13/cobra.(*Command).ExecuteC(0x7bad940)\n\tgithub.com/spf13/cobra@v1.8.1/command...",
"timestamp": "2025-03-07 15:49:12.920 Z",
"worker_name": "ImportProcess"
}
Is there any additional troubleshooting that I should do, or any workaround?