Error while running queries against CrateDB: panic: conn busy

[Daniel Seybold]

Hi TSBS community,

I am trying to run the cpu-only against a CrateDB instance, version 4.7.0

The data generation and load phase works fine with the following commands:

/binary/tsbs/bin/tsbs_generate_queries --queries 2000 --query-type single-groupby-1-1-1 --scale 1000 --seed 123 --timestamp-end 2016-01-01T02:00:00Z --use-case cpu-only --format cratedb --file /binary/tsbs/bin/queries

/binary/tsbs/bin/tsbs_generate_data --initial-scale 1 --scale 1000 --seed 123 --timestamp-end 2016-01-01T02:00:00Z --use-case cpu-only --format cratedb --file /binary/tsbs/bin/data

/binary/tsbs/bin/tsbs_load_cratedb --hosts 172.31.20.142 --db-name tsbs --user admin --pass topsecret --batch-size 1000 --do-abort-on-exist true --hash-workers false --insert-intervals 1,2 --seed 123 --workers 8 --file /binary/tsbs/bin/data

However, if I am trying to run the queries with the following command:

/binary/tsbs/bin/tsbs_run_queries_cratedb --hosts 172.31.20.142 --db-name tsbs --user admin --pass topsecret --hdr-latencies hdr --prewarm-queries false --workers 8 --print-interval 100 --file /binary/tsbs/bin/queries

I get the following error:

panic: conn busy

goroutine 14 [running]:
github.com/timescale/tsbs/pkg/query.(*BenchmarkRunner).processorHandler(0xc00019a0c0, 0xc00003aef0, 0xc0000a4960, 0xc3f2c0, 0x9ce6d0, 0xc00000e858, 0x7)
       /opt/workloads/tsbs/pkg/mod/github.com/timescale/tsbs@v0.0.0-20220119183622-bcc00137d72d/pkg/query/benchmarker.go:239 +0x28d
created by github.com/timescale/tsbs/pkg/query.(*BenchmarkRunner).Run
       /opt/workloads/tsbs/pkg/mod/github.com/timescale/tsbs@v0.0.0-20220119183622-bcc00137d72d/pkg/query/benchmarker.go:160 +0x206

Any help would be much appreciated

[Daniel Seybold]

I did a bit of research and it looks like the problem relates to use direct usage of pgx without pgxpool or PgBouncer as decribed here: jackc/pgx#635 (comment)

@atanasovskib @kovrus any ideas or comments on these thoughts?