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https://issues.apache.org/jira/browse/FLINK-15919?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Yao updated FLINK-15919:
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Fix Version/s: (was: 1.10.1)
(was: 1.11.0)
> MemoryManager shouldn't allow releasing more memory than reserved
> -----------------------------------------------------------------
>
> Key: FLINK-15919
> URL: https://issues.apache.org/jira/browse/FLINK-15919
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Task
> Affects Versions: 1.10.0
> Reporter: Yu Li
> Assignee: Yu Li
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.10.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> Currently {{MemoryManager}} allows releasing more memory than reserved for
> the same owner object, which could be reproduced by adding below test case
> into {{MemoryManagerTest}}:
> {code}
> @Test
> public void testMemoryReleaseGuard() throws MemoryReservationException {
> Object owner = new Object();
> Object owner2 = new Object();
> long totalHeapMemorySize =
> memoryManager.availableMemory(MemoryType.HEAP);
> memoryManager.reserveMemory(owner, MemoryType.HEAP, PAGE_SIZE);
> memoryManager.reserveMemory(owner2, MemoryType.HEAP, PAGE_SIZE);
> memoryManager.releaseMemory(owner, MemoryType.HEAP, PAGE_SIZE);
> memoryManager.releaseMemory(owner, MemoryType.HEAP, PAGE_SIZE);
> long heapMemoryLeft =
> memoryManager.availableMemory(MemoryType.HEAP);
> assertEquals("Memory leak happens", totalHeapMemorySize -
> PAGE_SIZE, heapMemoryLeft);
> memoryManager.releaseAllMemory(owner2, MemoryType.HEAP);
> }
> {code}
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