Optimize uid allocation in live loader.#5132
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The live loader is having trouble loading exported data with the existing uids because there are too many requests for new uids. The current version requests new Uids to be allocated for every uids greater than the maximum. In the exported data, the uids can come in increasing order, which causes a new request for uids with every NQuad. This PR changes the code to pre-allocate the uids, once per batch of NQuad received from the NQuad buffer channel. Tested it with the 1 million movie data set and now I am getting times similar to the live loader with the --new_uids option enabled. Fixes #4996
manishrjain
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Reviewed 1 of 1 files at r1.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @martinmr)
dgraph/cmd/live/run.go, line 233 at r1 (raw file):
} oUid, err := strconv.ParseUint(nq.ObjectId, 0, 64)
And here.
manishrjain
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complete! all files reviewed, all discussions resolved
martinmr
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The live loader is having trouble loading exported data with the existing uids because there are too many requests for new uids. The current version requests new Uids to be allocated for every uids greater than the maximum. In the exported data, the uids can come in increasing order, which causes a new request for uids with every NQuad. This PR changes the code to pre-allocate the uids, once per batch of NQuad received from the NQuad buffer channel. Tested it with the 1 million movie data set and now I am getting times similar to the live loader with the --new_uids option enabled. Fixes #4996
dna2github
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Jul 18, 2020
The live loader is having trouble loading exported data with the existing uids because there are too many requests for new uids. The current version requests new Uids to be allocated for every uids greater than the maximum. In the exported data, the uids can come in increasing order, which causes a new request for uids with every NQuad. This PR changes the code to pre-allocate the uids, once per batch of NQuad received from the NQuad buffer channel. Tested it with the 1 million movie data set and now I am getting times similar to the live loader with the --new_uids option enabled. Fixes dgraph-io#4996
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The live loader is having trouble loading exported data with the
existing uids because there are too many requests for new uids.
The current version requests new Uids to be allocated for every
uids greater than the maximum. In the exported data, the uids can come
in increasing order, which causes a new request for uids with every
NQuad.
This PR changes the code to pre-allocate the uids, once per batch of
NQuad received from the NQuad buffer channel.
Tested it with the 1 million movie data set and now I am getting times
similar to the live loader with the --new_uids option enabled.
Fixes #4996
This change is