We have an application where we need to perform regular schema alter operations to isolate some predicates for new datasets. This alter operation creates a new set of predicates. We have observed following behaviour whenever alter operation runs: increase in pending queries: rate(dgraph_pending_qu…

Schema Alter operation causing high query/mutation latencies

ashishgoswami (Ashish) September 24, 2020, 3:19am 13

Thanks for providing the above information. As you said, you are able to reproduce this on test setup, would it be possible to share your test scripts with us? You can share those by personal message.

Alter Schema slower for v20

Topic		Replies	Views
Very slow schema mutation on empty database Users	8	633	June 12, 2020
Very slow schema mutation on empty database (still an issue) Dgraph dgraph , status:accepted , ticket:created	19	1328	October 6, 2020
Alter Schema slower for v20 Dgraph area:schema	1	770	September 23, 2020
Alter is slow and multithread mutation cost 95% of cpu for v21.12.0 Dgraph dgraph	1	432	January 6, 2022
Cost of each mutation grows as more mutations are in a transaction Dgraph dgraph , kind:enhancement , status:accepted , priority:p1 , area:performance	2	490	February 21, 2019

Schema Alter operation causing high query/mutation latencies

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