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ARROW-4296: [C++] [Plasma] Update dlmemalign call to prevent plasma store crash with -f flag #3434

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anuragkh wants to merge 1 commit into from
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ARROW-4296: [C++] [Plasma] Update dlmemalign call to prevent plasma store crash with -f flag #3434

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2 changes: 1 addition & 1 deletion cpp/src/plasma/store.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -913,7 +913,7 @@ class PlasmaStoreRunner {
// achieve that by mallocing and freeing a single large amount of space.
// that maximum allowed size up front.
if (use_one_memory_mapped_file) {
void* pointer = plasma::dlmemalign(kBlockSize, system_memory);
void* pointer = plasma::dlmemalign(kBlockSize, system_memory - 8192);
ARROW_CHECK(pointer != nullptr);
plasma::dlfree(pointer);
}
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