Examples with IndexSample org.neo4j.kernel.api.index.IndexSample used on opensource projects

Example 1 with IndexSample

use of org.neo4j.kernel.api.index.IndexSample in project neo4j by neo4j.

the class FusionIndexIT method verifyContent.

private void verifyContent() {
    try (Transaction tx = db.beginTx()) {
        tx.schema().awaitIndexesOnline(30, TimeUnit.SECONDS);
        assertEquals(1L, Iterators.stream(tx.schema().getIndexes(label).iterator()).count());
        assertNotNull(tx.findNode(label, propKey, numberValue));
        assertNotNull(tx.findNode(label, propKey, stringValue));
        assertNotNull(tx.findNode(label, propKey, spatialValue));
        assertNotNull(tx.findNode(label, propKey, temporalValue));
        assertThat(indexSample()).isEqualTo(new IndexSample(4, 4, 4, 0));
        tx.commit();
    }
}

Example 2 with IndexSample

use of org.neo4j.kernel.api.index.IndexSample in project neo4j by neo4j.

the class IndexStatisticsStoreTest method tracePageCacheAccessOnCheckpoint.

@Test
void tracePageCacheAccessOnCheckpoint() throws IOException {
    var cacheTracer = new DefaultPageCacheTracer();
    var store = openStore(cacheTracer, "checkpoint");
    try (var cursorContext = new CursorContext(cacheTracer.createPageCursorTracer("tracePageCacheAccessOnCheckpoint"))) {
        for (int i = 0; i < 100; i++) {
            store.replaceStats(i, new IndexSample());
        }
        store.checkpoint(cursorContext);
        PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
        assertThat(cursorTracer.pins()).isEqualTo(43);
        assertThat(cursorTracer.unpins()).isEqualTo(43);
        assertThat(cursorTracer.hits()).isEqualTo(35);
        assertThat(cursorTracer.faults()).isEqualTo(8);
    }
}

Example 3 with IndexSample

use of org.neo4j.kernel.api.index.IndexSample in project neo4j by neo4j.

the class IndexStatisticsStoreTest method shouldHandleConcurrentUpdatesWithCheckpointing.

@Test
void shouldHandleConcurrentUpdatesWithCheckpointing() throws Throwable {
    // given
    Race race = new Race();
    AtomicBoolean checkpointDone = new AtomicBoolean();
    int contestantsPerIndex = 5;
    int indexes = 3;
    int delta = 5;
    AtomicIntegerArray expected = new AtomicIntegerArray(indexes);
    race.addContestant(throwing(() -> {
        for (int i = 0; i < 20; i++) {
            Thread.sleep(5);
            store.checkpoint(CursorContext.NULL);
        }
        checkpointDone.set(true);
    }));
    for (int i = 0; i < indexes; i++) {
        int indexId = i;
        store.replaceStats(indexId, new IndexSample(0, 0, 0));
        race.addContestants(contestantsPerIndex, () -> {
            while (!checkpointDone.get()) {
                store.incrementIndexUpdates(indexId, delta);
                expected.addAndGet(indexId, delta);
            }
        });
    }
    // when
    race.go();
    // then
    for (int i = 0; i < indexes; i++) {
        assertEquals(new IndexSample(0, 0, 0, expected.get(i)), store.indexSample(i));
    }
    restartStore();
    for (int i = 0; i < indexes; i++) {
        assertEquals(new IndexSample(0, 0, 0, expected.get(i)), store.indexSample(i));
    }
}

Example 4 with IndexSample

use of org.neo4j.kernel.api.index.IndexSample in project neo4j by neo4j.

the class IndexStatisticsStoreTest method tracePageCacheAccessOnConsistencyCheck.

@Test
void tracePageCacheAccessOnConsistencyCheck() throws IOException {
    var cacheTracer = new DefaultPageCacheTracer();
    var store = openStore(cacheTracer, "consistencyCheck");
    try (var cursorContext = new CursorContext(cacheTracer.createPageCursorTracer("tracePageCacheAccessOnConsistencyCheck"))) {
        for (int i = 0; i < 100; i++) {
            store.replaceStats(i, new IndexSample());
        }
        store.checkpoint(CursorContext.NULL);
        store.consistencyCheck(noopReporterFactory(), cursorContext);
        PageCursorTracer cursorTracer = cursorContext.getCursorTracer();
        assertThat(cursorTracer.pins()).isEqualTo(16);
        assertThat(cursorTracer.unpins()).isEqualTo(16);
        assertThat(cursorTracer.hits()).isEqualTo(16);
    }
}

Example 5 with IndexSample

use of org.neo4j.kernel.api.index.IndexSample in project neo4j by neo4j.

the class BlockEntryStreamMergerTest method shouldMergePartsIntoOneWithSampling.

@Test
void shouldMergePartsIntoOneWithSampling() throws Exception {
    // given
    List<BlockEntryCursor<RawBytes, RawBytes>> parts = buildParts(random, layout, allData);
    // when
    try (BlockEntryStreamMerger<RawBytes, RawBytes> merger = new BlockEntryStreamMerger<>(parts, layout, layout, NOT_CANCELLABLE, BATCH_SIZE, QUEUE_SIZE)) {
        Future<Void> t2Future = t2.execute(merger);
        // then
        assertMergedPartStream(allData, merger);
        t2Future.get();
        IndexSample sample = merger.buildIndexSample();
        assertThat(sample.sampleSize()).isEqualTo(allData.size());
        assertThat(sample.indexSize()).isEqualTo(allData.size());
        assertThat(sample.uniqueValues()).isEqualTo(countUniqueKeys(allData));
    }
}