Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/10170#discussion_r47029505
--- Diff:
core/src/test/scala/org/apache/spark/memory/UnifiedMemoryManagerSuite.scala ---
@@ -154,32 +177,34 @@ class UnifiedMemoryManagerSuite extends
MemoryManagerSuite with PrivateMethodTes
assert(mm.acquireExecutionMemory(800L, taskAttemptId,
MemoryMode.ON_HEAP) === 800L)
assert(mm.executionMemoryUsed === 800L)
assert(mm.storageMemoryUsed === 0L)
- assertEnsureFreeSpaceNotCalled(ms)
+ assertEvictBlocksToFreeSpaceNotCalled(ms)
// Storage should not be able to evict execution
assert(mm.acquireStorageMemory(dummyBlock, 100L, evictedBlocks))
assert(mm.executionMemoryUsed === 800L)
assert(mm.storageMemoryUsed === 100L)
- assertEnsureFreeSpaceCalled(ms, 100L)
+ assertEvictBlocksToFreeSpaceNotCalled(ms)
assert(!mm.acquireStorageMemory(dummyBlock, 250L, evictedBlocks))
assert(mm.executionMemoryUsed === 800L)
assert(mm.storageMemoryUsed === 100L)
- assertEnsureFreeSpaceCalled(ms, 250L)
+ assertEvictBlocksToFreeSpaceCalled(ms, 150L) // try to evict blocks ...
+ assert(evictedBlocks.isEmpty) // ... but don't evict since evicting
will not be sufficient
mm.releaseExecutionMemory(maxMemory, taskAttemptId, MemoryMode.ON_HEAP)
mm.releaseStorageMemory(maxMemory)
// Acquire some execution memory again, but this time keep it within
the execution region
assert(mm.acquireExecutionMemory(200L, taskAttemptId,
MemoryMode.ON_HEAP) === 200L)
assert(mm.executionMemoryUsed === 200L)
assert(mm.storageMemoryUsed === 0L)
- assertEnsureFreeSpaceNotCalled(ms)
+ assertEvictBlocksToFreeSpaceNotCalled(ms)
// Storage should still not be able to evict execution
assert(mm.acquireStorageMemory(dummyBlock, 750L, evictedBlocks))
assert(mm.executionMemoryUsed === 200L)
assert(mm.storageMemoryUsed === 750L)
- assertEnsureFreeSpaceCalled(ms, 750L)
+ assertEvictBlocksToFreeSpaceNotCalled(ms) // since there was 800 bytes
free
assert(!mm.acquireStorageMemory(dummyBlock, 850L, evictedBlocks))
assert(mm.executionMemoryUsed === 200L)
assert(mm.storageMemoryUsed === 750L)
- assertEnsureFreeSpaceCalled(ms, 850L)
+ assertEvictBlocksToFreeSpaceCalled(ms, 800L) // try to evict blocks...
--- End diff --
same here, if you take the suggestion then this will not happen
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