juliuszsompolski commented on code in PR #41829:
URL: https://github.com/apache/spark/pull/41829#discussion_r1251818998
##########
connector/connect/client/jvm/src/main/scala/org/apache/spark/sql/connect/client/SparkConnectClient.scala:
##########
@@ -79,7 +107,11 @@ private[sql] class SparkConnectClient(
.setSessionId(sessionId)
.setClientType(userAgent)
.build()
- stub.executePlan(request)
+ retry {
+ val result = stub.executePlan(request)
+ result.hasNext // moves evaluation of BlockingResponseStream to
SparkConnectClient
Review Comment:
could you elaborate on why this is needed? I believe this `.hasNext` can
block for quite a while until the first response comes back on the stream.
##########
connector/connect/client/jvm/src/main/scala/org/apache/spark/sql/connect/client/SparkConnectClient.scala:
##########
@@ -564,4 +606,33 @@ object SparkConnectClient {
}
}
}
+
+ private[client] def retryException(e: Throwable): Boolean = {
+ if (e.isInstanceOf[StatusRuntimeException]) {
+ e.asInstanceOf[StatusRuntimeException].getStatus().getCode() ==
Status.Code.UNAVAILABLE
+ } else {
+ false
+ }
+ }
+
+ /**
+ * [[RetryParameters]] configure the retry mechanism in
[[SparkConnectClient]]
+ *
+ * @param max_retries
+ * Maximum number of retries.
+ * @param initial_backoff
+ * Start value of the exponential backoff (ms).
+ * @param max_backoff
+ * Maximal value of the exponential backoff (ms).
+ * @param backoff_multiplier
+ * Multiplicative base of the exponential backoff.
+ * @param should_retry
+ * Function that determines whether a retry is to be performed in the
event of an error.
+ */
+ private[client] case class RetryParameters(
+ max_retries: Int = 15,
Review Comment:
use camelCase instead of snake_case for parameters.
##########
connector/connect/client/jvm/src/main/scala/org/apache/spark/sql/connect/client/SparkConnectClient.scala:
##########
@@ -564,4 +606,33 @@ object SparkConnectClient {
}
}
}
+
+ private[client] def retryException(e: Throwable): Boolean = {
+ if (e.isInstanceOf[StatusRuntimeException]) {
+ e.asInstanceOf[StatusRuntimeException].getStatus().getCode() ==
Status.Code.UNAVAILABLE
+ } else {
+ false
+ }
+ }
+
+ /**
+ * [[RetryParameters]] configure the retry mechanism in
[[SparkConnectClient]]
+ *
+ * @param max_retries
+ * Maximum number of retries.
+ * @param initial_backoff
+ * Start value of the exponential backoff (ms).
+ * @param max_backoff
+ * Maximal value of the exponential backoff (ms).
+ * @param backoff_multiplier
+ * Multiplicative base of the exponential backoff.
+ * @param should_retry
+ * Function that determines whether a retry is to be performed in the
event of an error.
Review Comment:
specifying this configuration and defining which exceptions should be
retries is a followup?
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