turboFei commented on a change in pull request #27943: [SPARK-31179] Fast fail
the connection while last connection failed in fast fail time window
URL: https://github.com/apache/spark/pull/27943#discussion_r401327864
##########
File path:
common/network-common/src/main/java/org/apache/spark/network/client/TransportClientFactory.java
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@@ -121,18 +126,22 @@ public MetricSet getAllMetrics() {
/**
* Create a {@link TransportClient} connecting to the given remote host /
port.
*
- * We maintains an array of clients (size determined by
spark.shuffle.io.numConnectionsPerPeer)
+ * We maintain an array of clients (size determined by
spark.shuffle.io.numConnectionsPerPeer)
* and randomly picks one to use. If no client was previously created in the
randomly selected
* spot, this function creates a new client and places it there.
*
+ * We also maintain a last connection failed time of these clients and a
fast fail time window
+ * based on io retry wait time. If this connection request can be retried
and the last connection
+ * failed time of these clients in the fast fail time window, fail this
connection directly.
+ *
* Prior to the creation of a new TransportClient, we will execute all
* {@link TransportClientBootstrap}s that are registered with this factory.
*
* This blocks until a connection is successfully established and fully
bootstrapped.
*
* Concurrency: This method is safe to call from multiple threads.
*/
- public TransportClient createClient(String remoteHost, int remotePort)
+ public TransportClient createClient(String remoteHost, int remotePort,
boolean withRetry)
Review comment:
thanks, have named this variable to `fastFail` and add java doc and comments.
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