ayushtkn commented on code in PR #6412:
URL: https://github.com/apache/hive/pull/6412#discussion_r3043764573
##########
jdbc/src/java/org/apache/hive/jdbc/HiveConnection.java:
##########
@@ -163,6 +164,12 @@
*/
public class HiveConnection implements java.sql.Connection {
private static final Logger LOG =
LoggerFactory.getLogger(HiveConnection.class);
+
+ /**
+ * Sentinel: no {@code SET hive.query.timeout.seconds} has been observed on
this connection yet.
+ */
+ static final long SESSION_QUERY_TIMEOUT_NOT_TRACKED = -1L;
+ private final AtomicLong sessionQueryTimeoutSeconds = new
AtomicLong(SESSION_QUERY_TIMEOUT_NOT_TRACKED);
Review Comment:
a single JDBC Connection can be shared across multiple threads, and it is
entirely possible to have multiple HiveStatement objects executing concurrently
on the same connection (which maps to a single session on the HS2 side).
via Beeline or so maybe not but In Hive Server 2 (HS2), a single JDBC
Connection corresponds to a single HS2 Session. You can absolutely execute
multiple queries concurrently within the same session by spawning multiple
threads on the client side, each using a different HiveStatement created from
that single HiveConnection.
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