yjshen commented on a change in pull request #1933:
URL: https://github.com/apache/arrow-datafusion/pull/1933#discussion_r820317903
##########
File path: datafusion/src/execution/memory_manager.rs
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@@ -340,6 +340,9 @@ impl MemoryManager {
} else if current < min_per_rqt {
// if we cannot acquire at lease 1/2n memory, just wait for
others
// to spill instead spill self frequently with limited total
mem
+ debug!(
+ "Cannot acquire minimum amount of memory {}, waiting for
others to spill ...",
+ human_readable_size(min_per_rqt));
Review comment:
How do you like to also log memory manager status as well?
``` rust
impl Display for MemoryManager {
fn fmt(&self, f: &mut Formatter) -> fmt::Result {
write!(f,
"MemoryManager usage statistics: total {}, trackers used {},
total {} requesters used: {}",
```
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