Ivan Artiukhov created IGNITE-20617:
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Summary: SQL: ~20x performance degradation in SELECTS (2 nodes VS
1 node)
Key: IGNITE-20617
URL: https://issues.apache.org/jira/browse/IGNITE-20617
Project: Ignite
Issue Type: Bug
Components: sql
Reporter: Ivan Artiukhov
Attachments: ignite-config.json, sql-1node-select.png,
sql-2nodes-select.png
Ignite 3, rev. 7d188ac7ae068bd69ff0e6e6cfe5a32ac5749d17
Benchmark:
[https://github.com/gridgain/YCSB/blob/ycsb-2023.3/ignite3/src/main/java/site/ycsb/db/ignite3/IgniteSqlClient.java]
The benchmark establishes an SQL {{Session}} and perform {{SELECTs}} via
{{{}preparedStatement{}}}.
Steps:
* Run an Ignite cluster of 2 nodes with the attached config
[^ignite-config.json]
* Run the SQL YCSB benchmark in preload mode:
** {{-db site.ycsb.db.ignite3.IgniteSqlClient -load -P
/opt/pubagent/poc/config/ycsb/workloads/workloadc -threads 1 -p
recordcount=10000 -p dataintegrity=true -p measurementtype=timeseries -p
hosts=192.168.1.60}}
* Run the SQL YCSB benchmark in 100% read mode:
** {{-db site.ycsb.db.ignite3.IgniteSqlClient -t -P
/opt/pubagent/poc/config/ycsb/workloads/workloadc -threads 1 -p
operationcount=10000 -p recordcount=10000 -p dataintegrity=true -p
measurementtype=timeseries -p hosts=192.168.1.60 -s}}
* Observe the following average throughput on reads:
!sql-2nodes-select.png!
Repeat the test with only 1 server node and observe {*}~20x better throughput
on reads{*}:
!sql-1node-select.png!
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