Gian Merlino 4631cff2a9 Free ByteBuffers in tests and fix some bugs. (#12521) ... * Ensure ByteBuffers allocated in tests get freed. Many tests had problems where a direct ByteBuffer would be allocated and then not freed. This is bad because it causes flaky tests. To fix this: 1) Add ByteBufferUtils.allocateDirect(size), which returns a ResourceHolder. This makes it easy to free the direct buffer. Currently, it's only used in tests, because production code seems OK. 2) Update all usages of ByteBuffer.allocateDirect (off-heap) in tests either to ByteBuffer.allocate (on-heap, which are garbaged collected), or to ByteBufferUtils.allocateDirect (wherever it seemed like there was a good reason for the buffer to be off-heap). Make sure to close all direct holders when done. * Changes based on CI results. * A different approach. * Roll back BitmapOperationTest stuff. * Try additional surefire memory. * Revert "Roll back BitmapOperationTest stuff." This reverts commit 49f846d9e3. * Add TestBufferPool. * Revert Xmx change in tests. * Better behaved NestedQueryPushDownTest. Exit tests on OOME. * Fix TestBufferPool. * Remove T1C from ARM tests. * Somewhat safer. * Fix tests. * Fix style stuff. * Additional debugging. * Reset null / expr configs better. * ExpressionLambdaAggregatorFactory thread-safety. * Alter forkNode to try to get better info when a JVM crashes. * Fix buffer retention in ExpressionLambdaAggregatorFactory. * Remove unused import.		2022-05-19 07:42:29 -07:00
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main/java/org/apache/druid/hll	Add Checkstyle for constant name static final (#8060)	2019-08-23 13:13:54 +03:00
test/java/org/apache/druid/hll	Free ByteBuffers in tests and fix some bugs. (#12521)	2022-05-19 07:42:29 -07:00