singhpk234 commented on code in PR #1517:
URL: https://github.com/apache/polaris/pull/1517#discussion_r2078528029
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extension/persistence/relational-jdbc/src/main/java/org/apache/polaris/extension/persistence/relational/jdbc/DatasourceOperations.java:
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@@ -173,23 +190,86 @@ public int executeUpdate(String query) throws
SQLException {
* @throws SQLException : Exception caught during transaction execution.
*/
public void runWithinTransaction(TransactionCallback callback) throws
SQLException {
- try (Connection connection = borrowConnection()) {
- boolean autoCommit = connection.getAutoCommit();
- connection.setAutoCommit(false);
- boolean success = false;
+ withRetries(
+ () -> {
+ try (Connection connection = borrowConnection()) {
+ boolean autoCommit = connection.getAutoCommit();
+ boolean success = false;
+ connection.setAutoCommit(false);
+ try {
+ try (Statement statement = connection.createStatement()) {
+ success = callback.execute(statement);
+ }
+ } finally {
+ if (success) {
+ connection.commit();
+ } else {
+ connection.rollback();
+ }
+ connection.setAutoCommit(autoCommit);
+ }
+ }
+ return null;
+ });
+ }
+
+ private boolean isRetryable(SQLException e) {
+ String sqlState = e.getSQLState();
+
+ if (sqlState != null) {
+ return sqlState.equals(DEADLOCK_SQL_CODE)
+ || // Deadlock detected
+ sqlState.equals(SERIALIZATION_FAILURE_SQL_CODE); // Serialization
failure
+ }
+
+ // Additionally, one might check for specific error messages or other
conditions
+ return e.getMessage().contains("connection refused")
+ || e.getMessage().contains("connection reset");
+ }
+
+ public <T> T withRetries(Operation<T> operation) throws SQLException {
Review Comment:
added @Visblefortesting, prematurely resolved.
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