Aleksey Plekhanov created IGNITE-21031:
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Summary: Calcite engine. Query fails on performance statistics in
case of nested scans
Key: IGNITE-21031
URL: https://issues.apache.org/jira/browse/IGNITE-21031
Project: Ignite
Issue Type: Bug
Reporter: Aleksey Plekhanov
Assignee: Aleksey Plekhanov
Nested scan can be performed by Calcite engine, for example, in case of UNION
ALL, when the first table scan is completed (and {{{}downstream().end(){}}})
method is invoked and UNION ALL operator proceed to the next table scan.
Reproducer:
{code:java}
public void testPerformanceStatisticsNestedScan() throws Exception {
sql(grid(0), "CREATE TABLE test_perf_stat_nested (a INT) WITH
template=REPLICATED");
sql(grid(0), "INSERT INTO test_perf_stat_nested VALUES (0), (1), (2), (3),
(4)");
startCollectStatistics();
sql(grid(0), "SELECT * FROM test_perf_stat_nested UNION ALL SELECT * FROM
test_perf_stat_nested");
}{code}
Fails on:
{noformat}
at
org.apache.ignite.internal.metric.IoStatisticsQueryHelper.startGatheringQueryStatistics(IoStatisticsQueryHelper.java:35)
at
org.apache.ignite.internal.processors.query.calcite.exec.tracker.PerformanceStatisticsIoTracker.startTracking(PerformanceStatisticsIoTracker.java:65)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.ScanStorageNode.processNextBatch(ScanStorageNode.java:68)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.ScanNode.push(ScanNode.java:145)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.ScanNode.request(ScanNode.java:95)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.UnionAllNode.end(UnionAllNode.java:79)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.ScanNode.processNextBatch(ScanNode.java:185)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.ScanStorageNode.processNextBatch(ScanStorageNode.java:70)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.ScanNode.push(ScanNode.java:145)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.ScanNode.request(ScanNode.java:95)
at
org.apache.ignite.internal.processors.query.calcite.exec.rel.UnionAllNode.request(UnionAllNode.java:56)
{noformat}
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