Ivan Rakov created IGNITE-6355:
----------------------------------
Summary: Calculating cache size during cache stop sporadically
fails with ClusterGroupEmptyCheckedException
Key: IGNITE-6355
URL: https://issues.apache.org/jira/browse/IGNITE-6355
Project: Ignite
Issue Type: Bug
Affects Versions: 2.1
Reporter: Ivan Rakov
Assignee: Ivan Rakov
Fix For: 2.3
After 10-20 runs of IgniteDbSnapshotSelfTest#testReuseCacheProxyAfterRestore
cache.size() fails:
{noformat}
[16:21:06,343][ERROR][main][root] Test failed.
javax.cache.CacheException: class
org.apache.ignite.cluster.ClusterGroupEmptyException: Topology projection is
empty.
at
org.apache.ignite.internal.processors.cache.GridCacheUtils.convertToCacheException(GridCacheUtils.java:1327)
at
org.apache.ignite.internal.processors.cache.IgniteCacheProxyImpl.cacheException(IgniteCacheProxyImpl.java:1672)
at
org.apache.ignite.internal.processors.cache.IgniteCacheProxyImpl.size(IgniteCacheProxyImpl.java:762)
at
org.apache.ignite.internal.processors.cache.GatewayProtectedCacheProxy.size(GatewayProtectedCacheProxy.java:508)
at
org.gridgain.grid.internal.processors.cache.database.IgniteDbSnapshotSelfTest.testReuseCacheProxyAfterRestore(IgniteDbSnapshotSelfTest.java:1793)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at junit.framework.TestCase.runTest(TestCase.java:176)
at
org.apache.ignite.testframework.junits.GridAbstractTest.runTestInternal(GridAbstractTest.java:2000)
at
org.apache.ignite.testframework.junits.GridAbstractTest.access$000(GridAbstractTest.java:132)
at
org.apache.ignite.testframework.junits.GridAbstractTest$5.run(GridAbstractTest.java:1915)
at java.lang.Thread.run(Thread.java:745)
Caused by: class org.apache.ignite.cluster.ClusterGroupEmptyException: Topology
projection is empty.
at
org.apache.ignite.internal.util.IgniteUtils$6.apply(IgniteUtils.java:823)
at
org.apache.ignite.internal.util.IgniteUtils$6.apply(IgniteUtils.java:821)
... 14 more
Caused by: class
org.apache.ignite.internal.cluster.ClusterGroupEmptyCheckedException: Topology
projection is empty.
at
org.apache.ignite.internal.processors.task.GridTaskWorker.getTaskTopology(GridTaskWorker.java:665)
at
org.apache.ignite.internal.processors.task.GridTaskWorker.body(GridTaskWorker.java:500)
at
org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)
at
org.apache.ignite.internal.processors.task.GridTaskProcessor.startTask(GridTaskProcessor.java:758)
at
org.apache.ignite.internal.processors.task.GridTaskProcessor.execute(GridTaskProcessor.java:454)
at
org.apache.ignite.internal.processors.task.GridTaskProcessor.execute(GridTaskProcessor.java:410)
at
org.apache.ignite.internal.processors.cache.GridCacheAdapter.sizeAsync(GridCacheAdapter.java:3747)
at
org.apache.ignite.internal.processors.cache.GridCacheAdapter.size(GridCacheAdapter.java:3704)
at
org.apache.ignite.internal.processors.cache.IgniteCacheProxyImpl.size(IgniteCacheProxyImpl.java:759)
... 11 more
{noformat}
Data race stems from here:
{noformat}
Group grp = modes.near ? cluster.forCacheNodes(name(), true, true,
false) : cluster.forDataNodes(name());
Collection<ClusterNode> nodes = grp.nodes();
if (nodes.isEmpty())
return new GridFinishedFuture<>(0);
ctx.kernalContext().task().setThreadContext(TC_SUBGRID, nodes);
return ctx.kernalContext().task().execute(
new SizeTask(ctx.name(), ctx.affinity().affinityTopologyVersion(),
peekModes), null);
{noformat}
grp.nodes() returns PredicateCollectionView, which predicate depends on Ignite
state. It can pass nodes.isEmpty() check and become empty later.
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