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Posted to commits@hive.apache.org by se...@apache.org on 2018/07/19 21:45:20 UTC
[42/54] [abbrv] hive git commit: HIVE-19416 : merge master into
branch (Sergey Shelukhin) 0719
http://git-wip-us.apache.org/repos/asf/hive/blob/651e7950/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnDbUtil.java
----------------------------------------------------------------------
diff --cc standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnDbUtil.java
index 0000000,2bae133..6fcfbce
mode 000000,100644..100644
--- a/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnDbUtil.java
+++ b/standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/txn/TxnDbUtil.java
@@@ -1,0 -1,514 +1,621 @@@
+ /*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+ package org.apache.hadoop.hive.metastore.txn;
+
+ import java.sql.Connection;
+ import java.sql.Driver;
+ import java.sql.PreparedStatement;
+ import java.sql.ResultSet;
+ import java.sql.ResultSetMetaData;
+ import java.sql.SQLException;
+ import java.sql.SQLTransactionRollbackException;
+ import java.sql.Statement;
+ import java.util.Properties;
+
+ import com.google.common.annotations.VisibleForTesting;
++import jline.internal.Log;
+ import org.apache.hadoop.conf.Configuration;
++import org.apache.hadoop.hive.metastore.api.MetaException;
+ import org.apache.hadoop.hive.metastore.conf.MetastoreConf;
+ import org.apache.hadoop.hive.metastore.conf.MetastoreConf.ConfVars;
++import org.apache.zookeeper.txn.TxnHeader;
+ import org.slf4j.Logger;
+ import org.slf4j.LoggerFactory;
+
+ /**
+ * Utility methods for creating and destroying txn database/schema, plus methods for
+ * querying against metastore tables.
+ * Placed here in a separate class so it can be shared across unit tests.
+ */
+ public final class TxnDbUtil {
+
+ static final private Logger LOG = LoggerFactory.getLogger(TxnDbUtil.class.getName());
+ private static final String TXN_MANAGER = "org.apache.hadoop.hive.ql.lockmgr.DbTxnManager";
+
+ private static int deadlockCnt = 0;
+
+ private TxnDbUtil() {
+ throw new UnsupportedOperationException("Can't initialize class");
+ }
+
+ /**
+ * Set up the configuration so it will use the DbTxnManager, concurrency will be set to true,
+ * and the JDBC configs will be set for putting the transaction and lock info in the embedded
+ * metastore.
+ *
+ * @param conf HiveConf to add these values to
+ */
+ public static void setConfValues(Configuration conf) {
+ MetastoreConf.setVar(conf, ConfVars.HIVE_TXN_MANAGER, TXN_MANAGER);
+ MetastoreConf.setBoolVar(conf, ConfVars.HIVE_SUPPORT_CONCURRENCY, true);
+ }
+
+ public static void prepDb(Configuration conf) throws Exception {
+ // This is a bogus hack because it copies the contents of the SQL file
+ // intended for creating derby databases, and thus will inexorably get
+ // out of date with it. I'm open to any suggestions on how to make this
+ // read the file in a build friendly way.
+
+ Connection conn = null;
+ Statement stmt = null;
+ try {
+ conn = getConnection(conf);
+ stmt = conn.createStatement();
+ stmt.execute("CREATE TABLE TXNS (" +
+ " TXN_ID bigint PRIMARY KEY," +
+ " TXN_STATE char(1) NOT NULL," +
+ " TXN_STARTED bigint NOT NULL," +
+ " TXN_LAST_HEARTBEAT bigint NOT NULL," +
+ " TXN_USER varchar(128) NOT NULL," +
+ " TXN_HOST varchar(128) NOT NULL," +
+ " TXN_TYPE integer)");
+
+ stmt.execute("CREATE TABLE TXN_COMPONENTS (" +
+ " TC_TXNID bigint NOT NULL REFERENCES TXNS (TXN_ID)," +
+ " TC_DATABASE varchar(128) NOT NULL," +
+ " TC_TABLE varchar(128)," +
+ " TC_PARTITION varchar(767)," +
+ " TC_OPERATION_TYPE char(1) NOT NULL," +
+ " TC_WRITEID bigint)");
+ stmt.execute("CREATE TABLE COMPLETED_TXN_COMPONENTS (" +
+ " CTC_TXNID bigint NOT NULL," +
+ " CTC_DATABASE varchar(128) NOT NULL," +
+ " CTC_TABLE varchar(128)," +
+ " CTC_PARTITION varchar(767)," +
+ " CTC_TIMESTAMP timestamp DEFAULT CURRENT_TIMESTAMP NOT NULL," +
+ " CTC_WRITEID bigint," +
+ " CTC_UPDATE_DELETE char(1) NOT NULL)");
+ stmt.execute("CREATE TABLE NEXT_TXN_ID (" + " NTXN_NEXT bigint NOT NULL)");
+ stmt.execute("INSERT INTO NEXT_TXN_ID VALUES(1)");
+
+ stmt.execute("CREATE TABLE TXN_TO_WRITE_ID (" +
+ " T2W_TXNID bigint NOT NULL," +
+ " T2W_DATABASE varchar(128) NOT NULL," +
+ " T2W_TABLE varchar(256) NOT NULL," +
+ " T2W_WRITEID bigint NOT NULL)");
+ stmt.execute("CREATE TABLE NEXT_WRITE_ID (" +
+ " NWI_DATABASE varchar(128) NOT NULL," +
+ " NWI_TABLE varchar(256) NOT NULL," +
+ " NWI_NEXT bigint NOT NULL)");
+
+ stmt.execute("CREATE TABLE MIN_HISTORY_LEVEL (" +
+ " MHL_TXNID bigint NOT NULL," +
+ " MHL_MIN_OPEN_TXNID bigint NOT NULL," +
+ " PRIMARY KEY(MHL_TXNID))");
+
+ stmt.execute("CREATE TABLE HIVE_LOCKS (" +
+ " HL_LOCK_EXT_ID bigint NOT NULL," +
+ " HL_LOCK_INT_ID bigint NOT NULL," +
+ " HL_TXNID bigint NOT NULL," +
+ " HL_DB varchar(128) NOT NULL," +
+ " HL_TABLE varchar(128)," +
+ " HL_PARTITION varchar(767)," +
+ " HL_LOCK_STATE char(1) NOT NULL," +
+ " HL_LOCK_TYPE char(1) NOT NULL," +
+ " HL_LAST_HEARTBEAT bigint NOT NULL," +
+ " HL_ACQUIRED_AT bigint," +
+ " HL_USER varchar(128) NOT NULL," +
+ " HL_HOST varchar(128) NOT NULL," +
+ " HL_HEARTBEAT_COUNT integer," +
+ " HL_AGENT_INFO varchar(128)," +
+ " HL_BLOCKEDBY_EXT_ID bigint," +
+ " HL_BLOCKEDBY_INT_ID bigint," +
+ " PRIMARY KEY(HL_LOCK_EXT_ID, HL_LOCK_INT_ID))");
+ stmt.execute("CREATE INDEX HL_TXNID_INDEX ON HIVE_LOCKS (HL_TXNID)");
+
+ stmt.execute("CREATE TABLE NEXT_LOCK_ID (" + " NL_NEXT bigint NOT NULL)");
+ stmt.execute("INSERT INTO NEXT_LOCK_ID VALUES(1)");
+
+ stmt.execute("CREATE TABLE COMPACTION_QUEUE (" +
+ " CQ_ID bigint PRIMARY KEY," +
+ " CQ_DATABASE varchar(128) NOT NULL," +
+ " CQ_TABLE varchar(128) NOT NULL," +
+ " CQ_PARTITION varchar(767)," +
+ " CQ_STATE char(1) NOT NULL," +
+ " CQ_TYPE char(1) NOT NULL," +
+ " CQ_TBLPROPERTIES varchar(2048)," +
+ " CQ_WORKER_ID varchar(128)," +
+ " CQ_START bigint," +
+ " CQ_RUN_AS varchar(128)," +
+ " CQ_HIGHEST_WRITE_ID bigint," +
+ " CQ_META_INFO varchar(2048) for bit data," +
+ " CQ_HADOOP_JOB_ID varchar(32))");
+
+ stmt.execute("CREATE TABLE NEXT_COMPACTION_QUEUE_ID (NCQ_NEXT bigint NOT NULL)");
+ stmt.execute("INSERT INTO NEXT_COMPACTION_QUEUE_ID VALUES(1)");
+
+ stmt.execute("CREATE TABLE COMPLETED_COMPACTIONS (" +
+ " CC_ID bigint PRIMARY KEY," +
+ " CC_DATABASE varchar(128) NOT NULL," +
+ " CC_TABLE varchar(128) NOT NULL," +
+ " CC_PARTITION varchar(767)," +
+ " CC_STATE char(1) NOT NULL," +
+ " CC_TYPE char(1) NOT NULL," +
+ " CC_TBLPROPERTIES varchar(2048)," +
+ " CC_WORKER_ID varchar(128)," +
+ " CC_START bigint," +
+ " CC_END bigint," +
+ " CC_RUN_AS varchar(128)," +
+ " CC_HIGHEST_WRITE_ID bigint," +
+ " CC_META_INFO varchar(2048) for bit data," +
+ " CC_HADOOP_JOB_ID varchar(32))");
+
+ stmt.execute("CREATE TABLE AUX_TABLE (" +
+ " MT_KEY1 varchar(128) NOT NULL," +
+ " MT_KEY2 bigint NOT NULL," +
+ " MT_COMMENT varchar(255)," +
+ " PRIMARY KEY(MT_KEY1, MT_KEY2))");
+
+ stmt.execute("CREATE TABLE WRITE_SET (" +
+ " WS_DATABASE varchar(128) NOT NULL," +
+ " WS_TABLE varchar(128) NOT NULL," +
+ " WS_PARTITION varchar(767)," +
+ " WS_TXNID bigint NOT NULL," +
+ " WS_COMMIT_ID bigint NOT NULL," +
+ " WS_OPERATION_TYPE char(1) NOT NULL)"
+ );
+
+ stmt.execute("CREATE TABLE REPL_TXN_MAP (" +
+ " RTM_REPL_POLICY varchar(256) NOT NULL, " +
+ " RTM_SRC_TXN_ID bigint NOT NULL, " +
+ " RTM_TARGET_TXN_ID bigint NOT NULL, " +
+ " PRIMARY KEY (RTM_REPL_POLICY, RTM_SRC_TXN_ID))"
+ );
+
+ stmt.execute("CREATE TABLE MATERIALIZATION_REBUILD_LOCKS (" +
+ " MRL_TXN_ID BIGINT NOT NULL, " +
+ " MRL_DB_NAME VARCHAR(128) NOT NULL, " +
+ " MRL_TBL_NAME VARCHAR(256) NOT NULL, " +
+ " MRL_LAST_HEARTBEAT BIGINT NOT NULL, " +
+ " PRIMARY KEY(MRL_TXN_ID))"
+ );
+
+ try {
++ stmt.execute("CREATE TABLE \"APP\".\"TBLS\" (\"TBL_ID\" BIGINT NOT NULL, " +
++ " \"CREATE_TIME\" INTEGER NOT NULL, \"DB_ID\" BIGINT, \"LAST_ACCESS_TIME\" INTEGER NOT NULL, " +
++ " \"OWNER\" VARCHAR(767), \"OWNER_TYPE\" VARCHAR(10), \"RETENTION\" INTEGER NOT NULL, " +
++ " \"SD_ID\" BIGINT, \"TBL_NAME\" VARCHAR(256), \"TBL_TYPE\" VARCHAR(128), " +
++ " \"VIEW_EXPANDED_TEXT\" LONG VARCHAR, \"VIEW_ORIGINAL_TEXT\" LONG VARCHAR, " +
++ " \"IS_REWRITE_ENABLED\" CHAR(1) NOT NULL DEFAULT \'N\', " +
++ " \"WRITE_ID\" BIGINT DEFAULT 0, " +
++ " PRIMARY KEY (TBL_ID))"
++ );
++ } catch (SQLException e) {
++ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
++ LOG.info("TBLS table already exist, ignoring");
++ } else {
++ throw e;
++ }
++ }
++
++ try {
++ stmt.execute("CREATE TABLE \"APP\".\"DBS\" (\"DB_ID\" BIGINT NOT NULL, \"DESC\" " +
++ "VARCHAR(4000), \"DB_LOCATION_URI\" VARCHAR(4000) NOT NULL, \"NAME\" VARCHAR(128), " +
++ "\"OWNER_NAME\" VARCHAR(128), \"OWNER_TYPE\" VARCHAR(10), " +
++ "\"CTLG_NAME\" VARCHAR(256) NOT NULL, PRIMARY KEY (DB_ID))");
++ } catch (SQLException e) {
++ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
++ LOG.info("TBLS table already exist, ignoring");
++ } else {
++ throw e;
++ }
++ }
++
++ try {
++ stmt.execute("CREATE TABLE \"APP\".\"PARTITIONS\" (" +
++ " \"PART_ID\" BIGINT NOT NULL, \"CREATE_TIME\" INTEGER NOT NULL, " +
++ " \"LAST_ACCESS_TIME\" INTEGER NOT NULL, \"PART_NAME\" VARCHAR(767), " +
++ " \"SD_ID\" BIGINT, \"TBL_ID\" BIGINT, " +
++ " \"WRITE_ID\" BIGINT DEFAULT 0, " +
++ " PRIMARY KEY (PART_ID))"
++ );
++ } catch (SQLException e) {
++ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
++ LOG.info("PARTITIONS table already exist, ignoring");
++ } else {
++ throw e;
++ }
++ }
++
++ try {
++ stmt.execute("CREATE TABLE \"APP\".\"TABLE_PARAMS\" (" +
++ " \"TBL_ID\" BIGINT NOT NULL, \"PARAM_KEY\" VARCHAR(256) NOT NULL, " +
++ " \"PARAM_VALUE\" CLOB, " +
++ " PRIMARY KEY (TBL_ID, PARAM_KEY))"
++ );
++ } catch (SQLException e) {
++ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
++ LOG.info("TABLE_PARAMS table already exist, ignoring");
++ } else {
++ throw e;
++ }
++ }
++
++ try {
++ stmt.execute("CREATE TABLE \"APP\".\"PARTITION_PARAMS\" (" +
++ " \"PART_ID\" BIGINT NOT NULL, \"PARAM_KEY\" VARCHAR(256) NOT NULL, " +
++ " \"PARAM_VALUE\" VARCHAR(4000), " +
++ " PRIMARY KEY (PART_ID, PARAM_KEY))"
++ );
++ } catch (SQLException e) {
++ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
++ LOG.info("PARTITION_PARAMS table already exist, ignoring");
++ } else {
++ throw e;
++ }
++ }
++
++ try {
+ stmt.execute("CREATE TABLE \"APP\".\"SEQUENCE_TABLE\" (\"SEQUENCE_NAME\" VARCHAR(256) NOT " +
+
+ "NULL, \"NEXT_VAL\" BIGINT NOT NULL)"
+ );
+ } catch (SQLException e) {
+ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
+ LOG.info("SEQUENCE_TABLE table already exist, ignoring");
+ } else {
+ throw e;
+ }
+ }
+
+ try {
+ stmt.execute("CREATE TABLE \"APP\".\"NOTIFICATION_SEQUENCE\" (\"NNI_ID\" BIGINT NOT NULL, " +
+
+ "\"NEXT_EVENT_ID\" BIGINT NOT NULL)"
+ );
+ } catch (SQLException e) {
+ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
+ LOG.info("NOTIFICATION_SEQUENCE table already exist, ignoring");
+ } else {
+ throw e;
+ }
+ }
+
+ try {
+ stmt.execute("CREATE TABLE \"APP\".\"NOTIFICATION_LOG\" (\"NL_ID\" BIGINT NOT NULL, " +
+ "\"DB_NAME\" VARCHAR(128), \"EVENT_ID\" BIGINT NOT NULL, \"EVENT_TIME\" INTEGER NOT" +
+
+ " NULL, \"EVENT_TYPE\" VARCHAR(32) NOT NULL, \"MESSAGE\" CLOB, \"TBL_NAME\" " +
+ "VARCHAR" +
+ "(256), \"MESSAGE_FORMAT\" VARCHAR(16))"
+ );
+ } catch (SQLException e) {
+ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
+ LOG.info("NOTIFICATION_LOG table already exist, ignoring");
+ } else {
+ throw e;
+ }
+ }
+
+ stmt.execute("INSERT INTO \"APP\".\"SEQUENCE_TABLE\" (\"SEQUENCE_NAME\", \"NEXT_VAL\") " +
+ "SELECT * FROM (VALUES ('org.apache.hadoop.hive.metastore.model.MNotificationLog', " +
+ "1)) tmp_table WHERE NOT EXISTS ( SELECT \"NEXT_VAL\" FROM \"APP\"" +
+ ".\"SEQUENCE_TABLE\" WHERE \"SEQUENCE_NAME\" = 'org.apache.hadoop.hive.metastore" +
+ ".model.MNotificationLog')");
+
+ stmt.execute("INSERT INTO \"APP\".\"NOTIFICATION_SEQUENCE\" (\"NNI_ID\", \"NEXT_EVENT_ID\")" +
+ " SELECT * FROM (VALUES (1,1)) tmp_table WHERE NOT EXISTS ( SELECT " +
+ "\"NEXT_EVENT_ID\" FROM \"APP\".\"NOTIFICATION_SEQUENCE\")");
+
+ try {
+ stmt.execute("CREATE TABLE TXN_WRITE_NOTIFICATION_LOG (" +
+ "WNL_ID bigint NOT NULL," +
+ "WNL_TXNID bigint NOT NULL," +
+ "WNL_WRITEID bigint NOT NULL," +
+ "WNL_DATABASE varchar(128) NOT NULL," +
+ "WNL_TABLE varchar(128) NOT NULL," +
+ "WNL_PARTITION varchar(1024) NOT NULL," +
+ "WNL_TABLE_OBJ clob NOT NULL," +
+ "WNL_PARTITION_OBJ clob," +
+ "WNL_FILES clob," +
+ "WNL_EVENT_TIME integer NOT NULL," +
+ "PRIMARY KEY (WNL_TXNID, WNL_DATABASE, WNL_TABLE, WNL_PARTITION))"
+ );
+ } catch (SQLException e) {
+ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
+ LOG.info("TXN_WRITE_NOTIFICATION_LOG table already exist, ignoring");
+ } else {
+ throw e;
+ }
+ }
+
+ stmt.execute("INSERT INTO \"APP\".\"SEQUENCE_TABLE\" (\"SEQUENCE_NAME\", \"NEXT_VAL\") " +
+ "SELECT * FROM (VALUES ('org.apache.hadoop.hive.metastore.model.MTxnWriteNotificationLog', " +
+ "1)) tmp_table WHERE NOT EXISTS ( SELECT \"NEXT_VAL\" FROM \"APP\"" +
+ ".\"SEQUENCE_TABLE\" WHERE \"SEQUENCE_NAME\" = 'org.apache.hadoop.hive.metastore" +
+ ".model.MTxnWriteNotificationLog')");
+ } catch (SQLException e) {
+ try {
+ conn.rollback();
+ } catch (SQLException re) {
+ LOG.error("Error rolling back: " + re.getMessage());
+ }
+
+ // Another thread might have already created these tables.
+ if (e.getMessage() != null && e.getMessage().contains("already exists")) {
+ LOG.info("Txn tables already exist, returning");
+ return;
+ }
+
+ // This might be a deadlock, if so, let's retry
+ if (e instanceof SQLTransactionRollbackException && deadlockCnt++ < 5) {
+ LOG.warn("Caught deadlock, retrying db creation");
+ prepDb(conf);
+ } else {
+ throw e;
+ }
+ } finally {
+ deadlockCnt = 0;
+ closeResources(conn, stmt, null);
+ }
+ }
+
+ public static void cleanDb(Configuration conf) throws Exception {
+ int retryCount = 0;
+ while(++retryCount <= 3) {
+ boolean success = true;
+ Connection conn = null;
+ Statement stmt = null;
+ try {
+ conn = getConnection(conf);
+ stmt = conn.createStatement();
+
+ // We want to try these, whether they succeed or fail.
+ try {
+ stmt.execute("DROP INDEX HL_TXNID_INDEX");
+ } catch (SQLException e) {
+ if(!("42X65".equals(e.getSQLState()) && 30000 == e.getErrorCode())) {
+ //42X65/3000 means index doesn't exist
+ LOG.error("Unable to drop index HL_TXNID_INDEX " + e.getMessage() +
+ "State=" + e.getSQLState() + " code=" + e.getErrorCode() + " retryCount=" + retryCount);
+ success = false;
+ }
+ }
+
+ success &= dropTable(stmt, "TXN_COMPONENTS", retryCount);
+ success &= dropTable(stmt, "COMPLETED_TXN_COMPONENTS", retryCount);
+ success &= dropTable(stmt, "TXNS", retryCount);
+ success &= dropTable(stmt, "NEXT_TXN_ID", retryCount);
+ success &= dropTable(stmt, "TXN_TO_WRITE_ID", retryCount);
+ success &= dropTable(stmt, "NEXT_WRITE_ID", retryCount);
+ success &= dropTable(stmt, "MIN_HISTORY_LEVEL", retryCount);
+ success &= dropTable(stmt, "HIVE_LOCKS", retryCount);
+ success &= dropTable(stmt, "NEXT_LOCK_ID", retryCount);
+ success &= dropTable(stmt, "COMPACTION_QUEUE", retryCount);
+ success &= dropTable(stmt, "NEXT_COMPACTION_QUEUE_ID", retryCount);
+ success &= dropTable(stmt, "COMPLETED_COMPACTIONS", retryCount);
+ success &= dropTable(stmt, "AUX_TABLE", retryCount);
+ success &= dropTable(stmt, "WRITE_SET", retryCount);
+ success &= dropTable(stmt, "REPL_TXN_MAP", retryCount);
+ success &= dropTable(stmt, "MATERIALIZATION_REBUILD_LOCKS", retryCount);
+ /*
+ * Don't drop NOTIFICATION_LOG, SEQUENCE_TABLE and NOTIFICATION_SEQUENCE as its used by other
+ * table which are not txn related to generate primary key. So if these tables are dropped
+ * and other tables are not dropped, then it will create key duplicate error while inserting
+ * to other table.
+ */
+ } finally {
+ closeResources(conn, stmt, null);
+ }
+ if(success) {
+ return;
+ }
+ }
+ throw new RuntimeException("Failed to clean up txn tables");
+ }
+
+ private static boolean dropTable(Statement stmt, String name, int retryCount) throws SQLException {
+ for (int i = 0; i < 3; i++) {
+ try {
+ stmt.execute("DROP TABLE " + name);
+ LOG.debug("Successfully dropped table " + name);
+ return true;
+ } catch (SQLException e) {
+ if ("42Y55".equals(e.getSQLState()) && 30000 == e.getErrorCode()) {
+ LOG.debug("Not dropping " + name + " because it doesn't exist");
+ //failed because object doesn't exist
+ return true;
+ }
+ if ("X0Y25".equals(e.getSQLState()) && 30000 == e.getErrorCode()) {
+ // Intermittent failure
+ LOG.warn("Intermittent drop failure, retrying, try number " + i);
+ continue;
+ }
+ LOG.error("Unable to drop table " + name + ": " + e.getMessage() +
+ " State=" + e.getSQLState() + " code=" + e.getErrorCode() + " retryCount=" + retryCount);
+ }
+ }
+ LOG.error("Failed to drop table, don't know why");
+ return false;
+ }
+
+ /**
+ * A tool to count the number of partitions, tables,
+ * and databases locked by a particular lockId.
+ *
+ * @param lockId lock id to look for lock components
+ *
+ * @return number of components, or 0 if there is no lock
+ */
+ public static int countLockComponents(Configuration conf, long lockId) throws Exception {
+ Connection conn = null;
+ PreparedStatement stmt = null;
+ ResultSet rs = null;
+ try {
+ conn = getConnection(conf);
+ stmt = conn.prepareStatement("SELECT count(*) FROM hive_locks WHERE hl_lock_ext_id = ?");
+ stmt.setLong(1, lockId);
+ rs = stmt.executeQuery();
+ if (!rs.next()) {
+ return 0;
+ }
+ return rs.getInt(1);
+ } finally {
+ closeResources(conn, stmt, rs);
+ }
+ }
+
+ /**
++ * Return true if the transaction of the given txnId is open.
++ * @param conf HiveConf
++ * @param txnId transaction id to search for
++ * @return
++ * @throws Exception
++ */
++ public static boolean isOpenOrAbortedTransaction(Configuration conf, long txnId) throws Exception {
++ Connection conn = null;
++ PreparedStatement stmt = null;
++ ResultSet rs = null;
++ try {
++ conn = getConnection(conf);
++ conn.setAutoCommit(false);
++ conn.setTransactionIsolation(Connection.TRANSACTION_READ_COMMITTED);
++
++ stmt = conn.prepareStatement("SELECT txn_id FROM TXNS WHERE txn_id = ?");
++ stmt.setLong(1, txnId);
++ rs = stmt.executeQuery();
++ if (!rs.next()) {
++ return false;
++ } else {
++ return true;
++ }
++ } finally {
++ closeResources(conn, stmt, rs);
++ }
++ }
++
++ /**
+ * Utility method used to run COUNT queries like "select count(*) from ..." against metastore tables
+ * @param countQuery countQuery text
+ * @return count countQuery result
+ * @throws Exception
+ */
+ public static int countQueryAgent(Configuration conf, String countQuery) throws Exception {
+ Connection conn = null;
+ Statement stmt = null;
+ ResultSet rs = null;
+ try {
+ conn = getConnection(conf);
+ stmt = conn.createStatement();
+ rs = stmt.executeQuery(countQuery);
+ if (!rs.next()) {
+ return 0;
+ }
+ return rs.getInt(1);
+ } finally {
+ closeResources(conn, stmt, rs);
+ }
+ }
+ @VisibleForTesting
+ public static String queryToString(Configuration conf, String query) throws Exception {
+ return queryToString(conf, query, true);
+ }
+ public static String queryToString(Configuration conf, String query, boolean includeHeader)
+ throws Exception {
+ Connection conn = null;
+ Statement stmt = null;
+ ResultSet rs = null;
+ StringBuilder sb = new StringBuilder();
+ try {
+ conn = getConnection(conf);
+ stmt = conn.createStatement();
+ rs = stmt.executeQuery(query);
+ ResultSetMetaData rsmd = rs.getMetaData();
+ if(includeHeader) {
+ for (int colPos = 1; colPos <= rsmd.getColumnCount(); colPos++) {
+ sb.append(rsmd.getColumnName(colPos)).append(" ");
+ }
+ sb.append('\n');
+ }
+ while(rs.next()) {
+ for (int colPos = 1; colPos <= rsmd.getColumnCount(); colPos++) {
+ sb.append(rs.getObject(colPos)).append(" ");
+ }
+ sb.append('\n');
+ }
+ } finally {
+ closeResources(conn, stmt, rs);
+ }
+ return sb.toString();
+ }
+
+ static Connection getConnection(Configuration conf) throws Exception {
+ String jdbcDriver = MetastoreConf.getVar(conf, ConfVars.CONNECTION_DRIVER);
+ Driver driver = (Driver) Class.forName(jdbcDriver).newInstance();
+ Properties prop = new Properties();
+ String driverUrl = MetastoreConf.getVar(conf, ConfVars.CONNECT_URL_KEY);
+ String user = MetastoreConf.getVar(conf, ConfVars.CONNECTION_USER_NAME);
+ String passwd = MetastoreConf.getPassword(conf, MetastoreConf.ConfVars.PWD);
+ prop.setProperty("user", user);
+ prop.setProperty("password", passwd);
+ Connection conn = driver.connect(driverUrl, prop);
+ conn.setAutoCommit(true);
+ return conn;
+ }
+
+ static void closeResources(Connection conn, Statement stmt, ResultSet rs) {
+ if (rs != null) {
+ try {
+ rs.close();
+ } catch (SQLException e) {
+ LOG.error("Error closing ResultSet: " + e.getMessage());
+ }
+ }
+
+ if (stmt != null) {
+ try {
+ stmt.close();
+ } catch (SQLException e) {
+ System.err.println("Error closing Statement: " + e.getMessage());
+ }
+ }
+
+ if (conn != null) {
+ try {
+ conn.rollback();
+ } catch (SQLException e) {
+ System.err.println("Error rolling back: " + e.getMessage());
+ }
+ try {
+ conn.close();
+ } catch (SQLException e) {
+ System.err.println("Error closing Connection: " + e.getMessage());
+ }
+ }
+ }
+ }