Github user greghogan commented on a diff in the pull request:
https://github.com/apache/flink/pull/3992#discussion_r118729203
--- Diff:
flink-connectors/flink-connector-elasticsearch-base/src/main/java/org/apache/flink/streaming/connectors/elasticsearch/ElasticsearchSinkBase.java
---
@@ -80,11 +79,21 @@
public static final String CONFIG_KEY_BULK_FLUSH_BACKOFF_RETRIES =
"bulk.flush.backoff.retries";
public static final String CONFIG_KEY_BULK_FLUSH_BACKOFF_DELAY =
"bulk.flush.backoff.delay";
+ /**
+ * Used to control whether the retry delay should increase
exponentially or remain constant.
+ */
public enum FlushBackoffType {
CONSTANT,
EXPONENTIAL
}
+ /**
+ * Provides a backoff policy for bulk requests. Whenever a bulk request
is rejected due to resource constraints
+ * (i.e. the client's internal thread pool is full), the backoff policy
decides how long the bulk processor will
+ * wait before the operation is retried internally.
+ *
+ * <p>This ia a proxy for version specific backoff policies.
--- End diff --
"ia" => "is"
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