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https://issues.apache.org/jira/browse/IGNITE-14671?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ilya Shishkov updated IGNITE-14671:
-----------------------------------
Fix Version/s: 2.11
> Test IgniteClusterSnapshotCheckTest#testClusterSnapshotCheckOtherCluster is
> flaky
> ---------------------------------------------------------------------------------
>
> Key: IGNITE-14671
> URL: https://issues.apache.org/jira/browse/IGNITE-14671
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 2.11
> Reporter: Ilya Shishkov
> Assignee: Ilya Shishkov
> Priority: Trivial
> Labels: iep-43
> Fix For: 2.11
>
> Attachments: testClusterSnapshotCheckOtherCluster_fix.patch,
> testClusterSnapshotCheckOtherCluster_printCount.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> To reproduce failure, run it several times, for example, set up IDE to run
> test with 'repeat until failure' option. Then you will get an assertion error:
> {code:java}
> java.lang.AssertionError: Number of jobs must be equal to the cluster size
> (except local node): [a2844419-3081-432a-b611-c4f891900005]
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at
> org.apache.ignite.testframework.junits.JUnitAssertAware.assertTrue(JUnitAssertAware.java:29)
> at
> org.apache.ignite.internal.processors.cache.persistence.snapshot.IgniteClusterSnapshotCheckTest.testClusterSnapshotCheckOtherCluster(IgniteClusterSnapshotCheckTest.java:316)
> {code}
> With applied patch [1] exception would be as follows:
> {code:java}
> java.lang.AssertionError: Number of jobs must be equal to the cluster size
> (except local node): [e7346d3b-b257-466c-95c2-0a85a7600005], count: 1
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.assertTrue(Assert.java:41)
> at
> org.apache.ignite.testframework.junits.JUnitAssertAware.assertTrue(JUnitAssertAware.java:29)
> at
> org.apache.ignite.internal.processors.cache.persistence.snapshot.IgniteClusterSnapshotCheckTest.testClusterSnapshotCheckOtherCluster(IgniteClusterSnapshotCheckTest.java:316)
> {code}
> It seems to be a concurrent update problem of thread unsafe HasSet (see [2,
> 3]):
> {code:java|title=Unsafe HashSet}
> Set<UUID> assigns = new HashSet<>();
> {code}
> {code:java|title=Concurrent update}
> grid(i).context().io().addMessageListener(GridTopic.TOPIC_JOB, new
> GridMessageListener() {
> @Override public void onMessage(UUID nodeId, Object msg, byte plc) {
> if (msg instanceof GridJobExecuteRequest) {
> GridJobExecuteRequest msg0 = (GridJobExecuteRequest)msg;
> if
> (msg0.getTaskName().contains(SnapshotPartitionsVerifyTask.class.getName()))
> assigns.add(locNodeId);
> }
> }
> });
> {code}
> With concurrent Set implementation problem is not reproducing (see patch [4]):
> {code:java}
> Set<UUID> assigns = Collections.newSetFromMap(new ConcurrentHashMap<>());
> {code}
> # [^testClusterSnapshotCheckOtherCluster_printCount.patch]
> #
> [IgniteClusterSnapshotCheckTest.java#L287|https://github.com/apache/ignite/blob/master/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/IgniteClusterSnapshotCheckTest.java#L287]
> #
> [IgniteClusterSnapshotCheckTest.java#L300|https://github.com/apache/ignite/blob/master/modules/core/src/test/java/org/apache/ignite/internal/processors/cache/persistence/snapshot/IgniteClusterSnapshotCheckTest.java#L300]
> # [^testClusterSnapshotCheckOtherCluster_fix.patch]
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