Sascha Hofer created IGNITE-7483:
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Summary: Queries: transformers are not executed when paging the result
Key: IGNITE-7483
URL:
https://issues.apache.org/jira/browse/IGNITE-7483 Project: Ignite
Issue Type: Bug
Components: cache
Affects Versions: 2.3
Reporter: Sascha Hofer
It seems that transformers are not executed during pagination which leads to {{ClassCastExceptions}} because the result list also contains instances of {{GridCacheQueryResponseEntry}}.
To reproduce open {{GridCacheQueryTransformerSelfTest.testGetKeys()}} and set a page size of 1 so that
{code:java}
List<Integer> keys = cache.query(new ScanQuery<Integer, String>(), transformer).getAll();
{code}
becomes to
{code:java}
List<Integer> keys = cache.query(new ScanQuery<Integer, String>().setPageSize(1), transformer).getAll();
{code}
this leads to following stack trace:
{noformat}
java.lang.ClassCastException: org.apache.ignite.internal.processors.cache.query.GridCacheQueryResponseEntry cannot be cast to java.lang.Comparable
at java.util.ComparableTimSort.binarySort(ComparableTimSort.java:249)
at java.util.ComparableTimSort.sort(ComparableTimSort.java:207)
at java.util.Arrays.sort(Arrays.java:1312)
at java.util.Arrays.sort(Arrays.java:1506)
at java.util.ArrayList.sort(ArrayList.java:1454)
at java.util.Collections.sort(Collections.java:141)
at org.apache.ignite.internal.processors.cache.query.GridCacheQueryTransformerSelfTest.testGetKeys(GridCacheQueryTransformerSelfTest.java:102)
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:2001)
at org.apache.ignite.testframework.junits.GridAbstractTest.access$000(GridAbstractTest.java:133)
at org.apache.ignite.testframework.junits.GridAbstractTest$5.run(GridAbstractTest.java:1916)
at java.lang.Thread.run(Thread.java:745)
{noformat}
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