ptupitsyn commented on code in PR #6076:
URL: https://github.com/apache/ignite-3/pull/6076#discussion_r2161351183
##########
modules/client/src/main/java/org/apache/ignite/client/IgniteClientConfiguration.java:
##########
@@ -176,4 +180,16 @@ public interface IgniteClientConfiguration {
* @return Operation timeout, in milliseconds.
*/
long operationTimeout();
+
+ /**
+ * Gets the size of cache to store partition awareness metadata of sql
queries, in number of entries.
+ * Default is {@value #DFLT_SQL_PARTITION_AWARENESS_METADATA_CACHE_SIZE}.
+ *
+ * <p>Every instance of {@link IgniteSql} has its own cache. Every unique
pair of (defaultSchema, queryString) reserve
+ * its own place in metadata cache, if metadata is available for this
particular query. In general, metadata is available
+ * for queries which have equality predicate over all colocation columns,
or which inserts the whole tuple.
Review Comment:
> queries which have equality predicate over all colocation columns
Let's try to explain this better. As a user, how can I affect this? Where is
this equality predicate?
##########
modules/client/src/main/java/org/apache/ignite/client/IgniteClientConfiguration.java:
##########
@@ -176,4 +180,16 @@ public interface IgniteClientConfiguration {
* @return Operation timeout, in milliseconds.
*/
long operationTimeout();
+
+ /**
+ * Gets the size of cache to store partition awareness metadata of sql
queries, in number of entries.
+ * Default is {@value #DFLT_SQL_PARTITION_AWARENESS_METADATA_CACHE_SIZE}.
+ *
Review Comment:
```suggestion
*
* <p>SQL partition awareness feature improves query performance by
directing queries to the specific server nodes that hold the relevant data,
minimizing network overhead. Ignite client builds the metadata cache during the
initial query execution and leverages this cache to speed up subsequent queries.
*
```
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