Details
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Question
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Resolution: Incomplete
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Major - P3
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None
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3.4.16
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Description
Test mongodb cluster performance with ycsb:
mongodb version: 3.4.0 or 3.4.16;
mongodb sharded cluster : 3 shardSver;
ycsb version: 0.12.0;
system : centos7; memory: 48G; CPU: 24 core;
Operation sequence:
1. start sharded cluster;
2. sh.enableSharding('ycsb');
3. sh.shardCollection('ycsb.usertable',{_id:"hashed"});
4. ycsb load data ( recordcount=20000, operationcount=20000, threads=64);
5. ycsb run scan (recordcount=20000, operationcount=20000, **scanproportion=1, threads=64),
At this time, it will occupy 7G of memory and will not be released for a long time.
6. drop collection(ycsb.usertable), and drop database(ycsb)
Memory usage still has not decreased;