Major performance decrease when adding/removing users
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Key: AMDATU-312
URL: http://jira.amdatu.org/jira/browse/AMDATU-312
Project: Amdatu
Issue Type: Bug
Components: Amdatu Cassandra
Affects Versions: 0.1.1
Reporter: Ivo Ladage - van Doorn
If you run the JMeter plans in this order, you will find that when you run the
last plan there is a significant performance slowdown in Cassandra:
- Amdatu Get Users - 0.1.0.jmx
- Amdatu UserAdmin - 0.1.0.jmx for some time (i.e. 2 minutes)
- Amdatu Get Users - 0.1.0.jmx
Note that at this time there will only be a few users available in UserAdmin,
still Cassandra queries on the CF Role take a very very long time. Using
YourKit it seems that all rowkeys of previous users still exist as it is very
busy with;
com.google.common.base.Preconditions.checkState(boolean)
com.google.common.collect.AbstractIterator.hasNext()
invoked 532000 times from
org.apache.cassandra.thrift.CassandraServer.get_range_slices(ColumnParent,
SlicePredicate, KeyRange, ConsistencyLevel)
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