attilapiros commented on a change in pull request #23278: [SPARK-24920][Core]
Allow sharing Netty's memory pool allocators
URL: https://github.com/apache/spark/pull/23278#discussion_r240418509
##########
File path:
common/network-common/src/main/java/org/apache/spark/network/util/NettyUtils.java
##########
@@ -95,6 +99,21 @@ public static String getRemoteAddress(Channel channel) {
return "<unknown remote>";
}
+ /**
+ * Returns the lazily created shared pooled ByteBuf allocator for the
specified allowCache
+ * parameter value.
+ */
+ public static synchronized PooledByteBufAllocator
getSharedPooledByteBufAllocator(
+ boolean allowDirectBufs,
+ boolean allowCache) {
+ final int index = allowCache ? 0 : 1;
+ if (_sharedPooledByteBufAllocator[index] == null) {
+ _sharedPooledByteBufAllocator[index] =
+ createPooledByteBufAllocator(allowDirectBufs, allowCache, 0 /*
numCores */);
Review comment:
I have moved `MAX_DEFAULT_NETTY_THREADS` and `defaultNumThreads` from core
to network-common (because of the dependency direction).
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