srowen commented on a change in pull request #23602:
[SPARK-26674][CORE]Consolidate CompositeByteBuf when reading large frame
URL: https://github.com/apache/spark/pull/23602#discussion_r253505409
##########
File path:
common/network-common/src/main/java/org/apache/spark/network/util/TransportConf.java
##########
@@ -94,6 +96,23 @@ public boolean preferDirectBufs() {
return conf.getBoolean(SPARK_NETWORK_IO_PREFERDIRECTBUFS_KEY, true);
}
+ /** The threshold for consolidation, it is derived upon the memoryOverhead
in yarn mode. */
Review comment:
This replicates a lot of logic from elsewhere with hard-coded constants. Is
it really important vary it so finely and add a whole new conf? It seems like
this ought to be pretty independent of the environment, whether consolidating a
buffer of size X is worthwhile.
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