Proto: Illegal wiretype 6 crash on alpha

[jarifibrahim]

What version of Dgraph are you using?

60b1cd0

Have you tried reproducing the issue with the latest release?

No, but it should be reproducible.

Steps to reproduce the issue (command/config used to run Dgraph).

I was using live loader to insert 7 billion rdfs (95G file). The rdfs are generated by copy-pasting the 21million.rdf.gz file multiple times.
Hers's what I did

1. Start zero dgraph zero
2. Start Alpha dgraph alpha
3. Live load the file dgraph live -f ...

Expected behavior and actual result.

The live loader ran fine for about 840 million rdfs (which took around 15 hours) and then alpha crashed with the following error

I0701 16:45:44.954318   23491 log.go:34] LOG Compact 2->3, del 35 tables, add 35 tables, took 22.954189288s
I0701 16:45:44.954355   23491 log.go:34] Compaction for level: 2 DONE
[Sentry] 2020/07/01 16:46:27 Sending fatal event [419c114b94bd472392f3fb1b49f101be] to o318308.ingest.sentry.io project: 5208688
2020/07/01 16:46:27 proto: illegal wireType 6

github.com/dgraph-io/dgraph/x.Check
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/x/error.go:42
github.com/dgraph-io/dgraph/posting.ReadPostingList.func2
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/posting/mvcc.go:320
github.com/dgraph-io/badger/v2.(*Item).Value
        /home/ibrahim/Projects/go/pkg/mod/github.com/dgraph-io/badger/v2@v2.0.1-rc1.0.20200609141616-14386ac9b764/iterator.go:111
github.com/dgraph-io/dgraph/posting.ReadPostingList
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/posting/mvcc.go:318
github.com/dgraph-io/dgraph/posting.getNew
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/posting/mvcc.go:364
github.com/dgraph-io/dgraph/posting.(*LocalCache).getInternal
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/posting/lists.go:219
github.com/dgraph-io/dgraph/posting.(*LocalCache).Get
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/posting/lists.go:242
github.com/dgraph-io/dgraph/posting.(*Txn).Get
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/posting/oracle.go:77
github.com/dgraph-io/dgraph/worker.runMutation
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/worker/mutation.go:108
github.com/dgraph-io/dgraph/worker.(*node).applyMutations.func3
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/worker/draft.go:453
github.com/dgraph-io/dgraph/worker.(*node).applyMutations.func4
        /home/ibrahim/Projects/go/src/github.com/dgraph-io/dgraph/worker/draft.go:482
runtime.goexit
        /usr/local/go/src/runtime/asm_amd64.s:1357

Here are the alpha and zero logs (the files are huge)
alpha.log
zero.log

I have the directory on which this issue is reproducible (it always crashes) but it's 125G directory and I'm trying to figure out how to share it.

[parasssh]

Closing. Non reproducible.