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https://issues.apache.org/jira/browse/CASSANDRA-17427?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17504079#comment-17504079
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Jacek Lewandowski commented on CASSANDRA-17427:
-----------------------------------------------
[PR (trunk)|https://github.com/apache/cassandra/pull/1488]
As an example, I've compared times of running a random set of tests ({{time ant
testclasslist}}):
{noformat}
org/apache/cassandra/cql3/ViewFilteringComplexPKTest.java
org/apache/cassandra/cql3/PstmtPersistenceTest.java
org/apache/cassandra/cql3/ViewFilteringClustering1Test.java
org/apache/cassandra/cql3/MemtableSizeTest.java
org/apache/cassandra/cql3/GcCompactionTest.java
org/apache/cassandra/cql3/ViewRangesTest.java
org/apache/cassandra/cql3/ViewTimesTest.java
org/apache/cassandra/cql3/DurationTest.java
org/apache/cassandra/cql3/ViewTest.java
org/apache/cassandra/cql3/ViewComplexTest.java
{noformat}
It was ~ 3'55" vs 3'15" (40 seconds faster)
I also tried for a single test ({{ViewTest}}), it was 50" vs 35" (15 seconds
faster)
For a single run, we can safe around 12 seconds by avoiding {{checkstyle}},
{{rat-check}} and {{eclipse-warnings}} - it is enough for them to be executed
once for the whole build (when we generate artifacts).
Other changes include:
- using {{rm -r}} instead of iterating over directories and individual files in
Java when deleting stuff (we delete many files before each test) - this is
enabled only in unit tests by a system property
- setting grace period for driver shutdown to 0
- avoiding use of open ssl in unit tests
There is also a small change in {{workspace.xml}} for IntelliJ which increases
max meta space memory from 384M to 512M as it frequently happens for jvm dtests
to fail because of insufficient amount of that memory
> Improve unit tests performance
> ------------------------------
>
> Key: CASSANDRA-17427
> URL: https://issues.apache.org/jira/browse/CASSANDRA-17427
> Project: Cassandra
> Issue Type: Improvement
> Components: Test/unit
> Reporter: Jacek Lewandowski
> Assignee: Jacek Lewandowski
> Priority: Normal
>
> There a couple of small improvements to run unit tests a bit faster
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