IGNITE-28428 Fix flaky PerformanceStatisticsPrinterTest#testSystemViewOperationFilter

Author: chesnokoff

modules/performance-statistics-ext/src/test/java/org/apache/ignite/internal/performancestatistics/PerformanceStatisticsPrinterTest.java

@@ -54,6 +54,7 @@
 import org.junit.Test;
 
 import static java.util.stream.Collectors.joining;
+import static org.apache.ignite.internal.processors.performancestatistics.AbstractPerformanceStatisticsTest.waitForStatisticsEnabled;
 import static org.apache.ignite.internal.processors.performancestatistics.FilePerformanceStatisticsWriter.PERF_STAT_DIR;
 import static org.apache.ignite.internal.processors.performancestatistics.OperationType.CACHE_GET;
 import static org.apache.ignite.internal.processors.performancestatistics.OperationType.CACHE_PUT;
@@ -154,6 +155,8 @@ public void testSystemViewOperationFilter() throws Exception {
 
             ign.context().performanceStatistics().startCollectStatistics();
 
+            waitForStatisticsEnabled(true);
+
             myCache.put("key", 1);
 
             myCache.query(new ScanQuery<>((key, val) -> true)).getAll();
@@ -163,6 +166,8 @@ public void testSystemViewOperationFilter() throws Exception {
             assertTrue("Performance statistics writer did not finish.", waitForCondition(lsnr::check, TIMEOUT));
 
             ign.context().performanceStatistics().stopCollectStatistics();
+
+            waitForStatisticsEnabled(false);
         }
 
         List<OperationType> expOps = F.asList(CACHE_START, CACHE_START, QUERY_PROPERTY, QUERY_PROPERTY, QUERY);

modules/performance-statistics-ext/src/test/java/org/apache/ignite/internal/performancestatistics/PerformanceStatisticsReportSelfTest.java

@@ -65,7 +65,6 @@
 import org.jetbrains.annotations.Nullable;
 import org.junit.Test;
 
-import static java.lang.System.exit;
 import static java.util.Collections.singletonMap;
 import static org.apache.ignite.cache.query.IndexQueryCriteriaBuilder.gt;
 import static org.apache.ignite.internal.processors.performancestatistics.AbstractPerformanceStatisticsTest.waitForStatisticsEnabled;