Sent restore proposals to all groups asyncronouosly.

[martinmr]

Previously, the requests were being sent one after the other.

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This change is 

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[manishrjain]

Got some comments.

Reviewed 1 of 1 files at r1.
Reviewable status: all files reviewed, 3 unresolved discussions (waiting on @martinmr and @vvbalaji-dgraph)

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worker/online_restore_ee.go, line 74 at r1 (raw file):

		go func() {
			defer wg.Done()
			proposeRestoreOrSend(ctx, reqCopy, errCh)

errCh <- proposeRestoreOrSend(...)

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worker/online_restore_ee.go, line 80 at r1 (raw file):

	close(errCh)

	for err := range errCh {

for range currentGroups {

if err := <-errCh; err != nil { return }
}

It's safe to return because pushing to errCh won't block.

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worker/online_restore_ee.go, line 92 at r1 (raw file):

	if groups().ServesGroup(req.GetGroupId()) {
		_, err := (&grpcWorker{}).Restore(ctx, req)
		errCh <- err

no need.

[martinmr]

Reviewable status: 0 of 1 files reviewed, 3 unresolved discussions (waiting on @manishrjain and @vvbalaji-dgraph)

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worker/online_restore_ee.go, line 74 at r1 (raw file):

Previously, manishrjain (Manish R Jain) wrote…

errCh <- proposeRestoreOrSend(...)

Done.

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worker/online_restore_ee.go, line 80 at r1 (raw file):

Previously, manishrjain (Manish R Jain) wrote…

for range currentGroups {

if err := <-errCh; err != nil { return }
}

It's safe to return because pushing to errCh won't block.

Done.

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worker/online_restore_ee.go, line 92 at r1 (raw file):

Previously, manishrjain (Manish R Jain) wrote…

no need.

Done.