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[branch-2.0][improvement](jdbc catalog) Force all resources to be closed in the close method #39665

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Merged
zy-kkk merged 2 commits into from
Aug 22, 2024
Merged

[branch-2.0][improvement](jdbc catalog) Force all resources to be closed in the close method #39665

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749c180
[improvement](jdbc catalog) Force all resources to be closed in the c…
zy-kkk Aug 21, 2024
5d4b156
fix
zy-kkk Aug 22, 2024
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32 changes: 8 additions & 24 deletions fe/be-java-extensions/jdbc-scanner/src/main/java/org/apache/doris/jdbc/JdbcExecutor.java
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Original file line number Diff line number Diff line change
Expand Up @@ -125,25 +125,18 @@ public boolean isNebula() {

public void close() throws Exception {
try {
if (stmt != null) {
if (stmt != null && !stmt.isClosed()) {
try {
stmt.cancel();
} catch (SQLException e) {
LOG.error("Error cancelling statement", e);
LOG.warn("Cannot cancelling statement: ", e);
}
}

boolean shouldAbort = conn != null && resultSet != null
&& (tableType == TOdbcTableType.MYSQL || tableType == TOdbcTableType.SQLSERVER);
boolean aborted = false; // Used to record whether the abort operation is performed
if (shouldAbort) {
aborted = abortReadConnection(conn, resultSet, tableType);
}

// If no abort operation is performed, the resource needs to be closed manually
if (!aborted) {
closeResources(resultSet, stmt, conn);
if (conn != null && resultSet != null) {
abortReadConnection(conn, resultSet, tableType);
}
closeResources(resultSet, stmt, conn);
} finally {
if (config.getConnectionPoolMinSize() == 0 && hikariDataSource != null) {
hikariDataSource.close();
Expand All @@ -157,32 +150,23 @@ private void closeResources(AutoCloseable... closeables) {
for (AutoCloseable closeable : closeables) {
if (closeable != null) {
try {
if (closeable instanceof Connection) {
if (!((Connection) closeable).isClosed()) {
closeable.close();
}
} else {
closeable.close();
}
closeable.close();
} catch (Exception e) {
LOG.error("Cannot close resource: ", e);
LOG.warn("Cannot close resource: ", e);
}
}
}
}

public boolean abortReadConnection(Connection connection, ResultSet resultSet, TOdbcTableType tableType)
public void abortReadConnection(Connection connection, ResultSet resultSet, TOdbcTableType tableType)
throws SQLException {
if (!resultSet.isAfterLast() && (tableType == TOdbcTableType.MYSQL || tableType == TOdbcTableType.SQLSERVER)) {
// Abort connection before closing. Without this, the MySQL/SQLServer driver
// attempts to drain the connection by reading all the results.
connection.abort(MoreExecutors.directExecutor());
return true;
}
return false;
}


public void cleanDataSource() {
if (hikariDataSource != null) {
hikariDataSource.close();
Expand Down