Daniel Barclay (Drill/MapR) created DRILL-2025:
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Summary: some tests don't re-use Drillbits, seem slower than
necessary
Key: DRILL-2025
URL: https://issues.apache.org/jira/browse/DRILL-2025
Project: Apache Drill
Issue Type: Bug
Components: Tools, Build & Test
Reporter: Daniel Barclay (Drill/MapR)
Assignee: Jacques Nadeau
Regarding tests that require running a Drillbit:
In many (maybe even most) cases, a test class creates a Drillbit instance that
is re-used by all the test methods in that class, so that each test method only
takes about a second or less to run.
However, there are a number of test classes that run much more slowly because
the class doesn't reuse a Drillbit, so each of its test methods starts up and
shuts down its own Drillbit instance, so each test method takes about 7 to 10
seconds to run, making the test class and the overall test suite take
considerably longer than seems necessary.
Except for any test methods that really do need their own instance of Drillbit,
those slower test classes should be adjusted to re-use Drillbits as many other
classes do.
Some slower, apparently non-sharing test classes are:
org.apache.drill.jdbc.test.TestMetadataDDL (30 methods)
org.apache.drill.jdbc.test.TestViews (20 methods)
org.apache.drill.jdbc.test.TestJdbcQuery (20 methods)
org.apache.drill.jdbc.test.TestJdbcDistQuery (12 methods)
org.apache.drill.exec.physical.impl.TestDecimal (6 methods)
org.apache.drill.exec.record.vector.TestDateTypes (6 methods)
org.apache.drill.jdbc.test.TestHiveStorage (5 methods)
org.apache.drill.exec.physical.impl.TestExtractFunctions (5 methods)
org.apache.drill.exec.expr.ExpressionInterpreterTest (4 methods)
org.apache.drill.exec.fn.impl.TestDateFunctions (3 methods)
org.apache.drill.exec.physical.impl.TestDistributedFragmentRun (3 methods)
org.apache.drill.exec.physical.impl.window.TestWindowFrame (3 methods)
org.apache.drill.exec.physical.impl.TestSimpleFragmentRun (3 methods)
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