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https://issues.apache.org/jira/browse/IGNITE-1666?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16920770#comment-16920770
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Nikolay Izhikov commented on IGNITE-1666:
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[~zstan] I doesn't understand your description.
1. Why do you think backup should be equal to 1? In the ticket description,
there is no such condition.
2. Why it should work, in the first place? If we lose some node for backup=1 we
lose some data.
> Fallback for full scan query does not work
> ------------------------------------------
>
> Key: IGNITE-1666
> URL: https://issues.apache.org/jira/browse/IGNITE-1666
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: ignite-1.4
> Reporter: Andrey Gura
> Assignee: Diana Iakovleva
> Priority: Major
>
> Fallback for full scan query doesn't work.
> Steps to reproduce (all in one thread):
> 1. Start N nodes, create cache and populate some entries to cache.
> 2. Stop some node.
> 3. Get iterator on the cache and fetch all entries one by one.
> 4. Repeat from step 2.
> On some iteration scan query fails with exception:
> {noformat}
> javax.cache.CacheException: class org.apache.ignite.IgniteCheckedException:
> Query execution failed: GridCacheQueryBean [qry=GridCacheQueryAdapter
> [type=SCAN, clsName=null, clause=null, filter=null, part=null, incMeta=false,
> metrics=GridCacheQueryMetricsAdapter [minTime=0, maxTime=0, sumTime=0,
> avgTime=0.0, execs=0, completed=0, fails=0], pageSize=1024, timeout=0,
> keepAll=false, incBackups=false, dedup=false, prj=null, keepPortable=false,
> subjId=3026635f-2a79-4a59-83cb-9db427f45003, taskHash=0], rdc=null,
> trans=null]
> at
> org.apache.ignite.internal.processors.cache.GridCacheUtils.convertToCacheException(GridCacheUtils.java:1614)
> at
> org.apache.ignite.internal.processors.cache.query.GridCacheQueryFutureAdapter.next(GridCacheQueryFutureAdapter.java:181)
> at
> org.apache.ignite.internal.processors.cache.CacheWeakQueryIteratorsHolder$WeakQueryFutureIterator.init(CacheWeakQueryIteratorsHolder.java:228)
> at
> org.apache.ignite.internal.processors.cache.CacheWeakQueryIteratorsHolder$WeakQueryFutureIterator.onHasNext(CacheWeakQueryIteratorsHolder.java:180)
> at
> org.apache.ignite.internal.util.GridCloseableIteratorAdapter.hasNextX(GridCloseableIteratorAdapter.java:53)
> at
> org.apache.ignite.internal.util.lang.GridIteratorAdapter.hasNext(GridIteratorAdapter.java:45)
> at
> org.apache.ignite.internal.processors.cache.distributed.CacheIteratorWhileRemovalSelfTest.doTest(CacheIteratorWhileRemovalSelfTest.java:135)
> at
> org.apache.ignite.internal.processors.cache.distributed.CacheIteratorWhileRemovalSelfTest.testFullScanIterator(CacheIteratorWhileRemovalSelfTest.java:91)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at junit.framework.TestCase.runTest(TestCase.java:176)
> at
> org.apache.ignite.testframework.junits.GridAbstractTest.runTestInternal(GridAbstractTest.java:1658)
> at
> org.apache.ignite.testframework.junits.GridAbstractTest.access$000(GridAbstractTest.java:112)
> at
> org.apache.ignite.testframework.junits.GridAbstractTest$4.run(GridAbstractTest.java:1596)
> Caused by: class org.apache.ignite.IgniteCheckedException: Query execution
> failed: GridCacheQueryBean [qry=GridCacheQueryAdapter [type=SCAN,
> clsName=null, clause=null, filter=null, part=null, incMeta=false,
> metrics=GridCacheQueryMetricsAdapter [minTime=0, maxTime=0, sumTime=0,
> avgTime=0.0, execs=0, completed=0, fails=0], pageSize=1024, timeout=0,
> keepAll=false, incBackups=false, dedup=false, prj=null, keepPortable=false,
> subjId=3026635f-2a79-4a59-83cb-9db427f45003, taskHash=0], rdc=null,
> trans=null]
> at
> org.apache.ignite.internal.processors.cache.query.GridCacheQueryFutureAdapter.checkError(GridCacheQueryFutureAdapter.java:267)
> at
> org.apache.ignite.internal.processors.cache.query.GridCacheQueryFutureAdapter.internalIterator(GridCacheQueryFutureAdapter.java:276)
> at
> org.apache.ignite.internal.processors.cache.query.GridCacheQueryFutureAdapter.next(GridCacheQueryFutureAdapter.java:171)
> ... 14 more
> Caused by: class org.apache.ignite.IgniteCheckedException: Failed to execute
> query on node [query=GridCacheQueryBean [qry=GridCacheQueryAdapter
> [type=SCAN, clsName=null, clause=null, filter=null, part=null, incMeta=false,
> metrics=GridCacheQueryMetricsAdapter [minTime=0, maxTime=0, sumTime=0,
> avgTime=0.0, execs=0, completed=0, fails=0], pageSize=1024, timeout=0,
> keepAll=false, incBackups=false, dedup=false, prj=null, keepPortable=false,
> subjId=3026635f-2a79-4a59-83cb-9db427f45003, taskHash=0], rdc=null,
> trans=null], nodeId=203d0a36-8587-4a32-aa51-3332d126d002]
> at
> org.apache.ignite.internal.processors.cache.query.GridCacheQueryFutureAdapter.onPage(GridCacheQueryFutureAdapter.java:390)
> at
> org.apache.ignite.internal.processors.cache.query.GridCacheDistributedQueryFuture.onNodeLeft(GridCacheDistributedQueryFuture.java:146)
> at
> org.apache.ignite.internal.processors.cache.query.GridCacheDistributedQueryManager$3.onEvent(GridCacheDistributedQueryManager.java:114)
> at
> org.apache.ignite.internal.managers.eventstorage.GridEventStorageManager.notifyListeners(GridEventStorageManager.java:770)
> at
> org.apache.ignite.internal.managers.eventstorage.GridEventStorageManager.notifyListeners(GridEventStorageManager.java:755)
> at
> org.apache.ignite.internal.managers.eventstorage.GridEventStorageManager.record(GridEventStorageManager.java:295)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryWorker.recordEvent(GridDiscoveryManager.java:1949)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryWorker.body0(GridDiscoveryManager.java:2156)
> at
> org.apache.ignite.internal.managers.discovery.GridDiscoveryManager$DiscoveryWorker.body(GridDiscoveryManager.java:1989)
> at
> org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:110)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: class
> org.apache.ignite.internal.cluster.ClusterTopologyCheckedException: Remote
> node has left topology: 203d0a36-8587-4a32-aa51-3332d126d002
> ... 10 more
> {noformat}
> In this case query should be retried (as well as for partition scan query).
> Test for reproducing could be found in PR
> https://github.com/apache/ignite/pull/149
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