Examples with ASTNode org.apache.hadoop.hive.ql.parse.ASTNode used on opensource projects

Example 1 with ASTNode

use of org.apache.hadoop.hive.ql.parse.ASTNode in project hive by apache.

the class RewriteParseContextGenerator method generateOperatorTree.

/**
   * Parse the input {@link String} command and generate an operator tree.
   * @param conf
   * @param command
   * @throws SemanticException
   */
public static Operator<? extends OperatorDesc> generateOperatorTree(QueryState queryState, String command) throws SemanticException {
    Operator<? extends OperatorDesc> operatorTree;
    try {
        Context ctx = new Context(queryState.getConf());
        ASTNode tree = ParseUtils.parse(command, ctx);
        BaseSemanticAnalyzer sem = SemanticAnalyzerFactory.get(queryState, tree);
        assert (sem instanceof SemanticAnalyzer);
        operatorTree = doSemanticAnalysis((SemanticAnalyzer) sem, tree, ctx);
        LOG.info("Sub-query Semantic Analysis Completed");
    } catch (IOException e) {
        LOG.error("IOException in generating the operator " + "tree for input command - " + command + " ", e);
        LOG.error(org.apache.hadoop.util.StringUtils.stringifyException(e));
        throw new SemanticException(e.getMessage(), e);
    } catch (ParseException e) {
        LOG.error("ParseException in generating the operator " + "tree for input command - " + command + " ", e);
        LOG.error(org.apache.hadoop.util.StringUtils.stringifyException(e));
        throw new SemanticException(e.getMessage(), e);
    } catch (SemanticException e) {
        LOG.error("SemanticException in generating the operator " + "tree for input command - " + command + " ", e);
        LOG.error(org.apache.hadoop.util.StringUtils.stringifyException(e));
        throw new SemanticException(e.getMessage(), e);
    }
    return operatorTree;
}

Example 2 with ASTNode

use of org.apache.hadoop.hive.ql.parse.ASTNode in project SQLWindowing by hbutani.

the class WindowingTypeCheckProcFactory method genExprNode.

public static HashMap<Node, Object> genExprNode(ASTNode expr, TypeCheckCtx tcCtx) throws SemanticException {
    // Create the walker, the rules dispatcher and the context.
    // create a walker which walks the tree in a DFS manner while
    // maintaining
    // the operator stack. The dispatcher
    // generates the plan from the operator tree
    Map<Rule, NodeProcessor> opRules = new LinkedHashMap<Rule, NodeProcessor>();
    opRules.put(new RuleRegExp("R1", Windowing2Parser.NULL + "%"), getNullExprProcessor());
    opRules.put(new RuleRegExp("R2", Windowing2Parser.Number + "%|" + Windowing2Parser.TinyintLiteral + "%|" + Windowing2Parser.SmallintLiteral + "%|" + Windowing2Parser.BigintLiteral + "%"), getNumExprProcessor());
    opRules.put(new RuleRegExp("R3", Windowing2Parser.Identifier + "%|" + Windowing2Parser.StringLiteral + "%|" + Windowing2Parser.CHARSETLITERAL + "%|" + Windowing2Parser.STRINGLITERALSEQUENCE + "%|" + "%|" + Windowing2Parser.IF + "%|" + Windowing2Parser.CASE + "%|" + Windowing2Parser.WHEN + "%|" + Windowing2Parser.IN + "%|" + Windowing2Parser.ARRAY + "%|" + Windowing2Parser.MAP + "%|" + Windowing2Parser.BETWEEN + "%|" + Windowing2Parser.STRUCT + "%"), getStrExprProcessor());
    opRules.put(new RuleRegExp("R4", Windowing2Parser.TRUE + "%|" + Windowing2Parser.FALSE + "%"), getBoolExprProcessor());
    opRules.put(new RuleRegExp("R5", Windowing2Parser.TABLEORCOL + "%"), getColumnExprProcessor());
    // The dispatcher fires the processor corresponding to the closest
    // matching
    // rule and passes the context along
    Dispatcher disp = new DefaultRuleDispatcher(getDefaultExprProcessor(), opRules, tcCtx);
    GraphWalker ogw = new DefaultGraphWalker(disp);
    // Create a list of topop nodes
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.add(expr);
    HashMap<Node, Object> nodeOutputs = new HashMap<Node, Object>();
    ogw.startWalking(topNodes, nodeOutputs);
    return nodeOutputs;
}

Example 3 with ASTNode

use of org.apache.hadoop.hive.ql.parse.ASTNode in project SQLWindowing by hbutani.

the class WindowSpecTranslation method translateColumn.

static void translateColumn(QueryDef qDef, ColumnDef cDef, InputInfo iInfo, ColumnSpec cSpec) throws WindowingException {
    String colTabName = cSpec.getTableName();
    if (colTabName != null && !colTabName.equals(iInfo.getAlias())) {
        throw new WindowingException(sprintf("Unknown Table Reference in column", cSpec));
    }
    ASTNode expr = TranslateUtils.buildASTNode(cSpec.getColumnName());
    ExprNodeDesc exprNode = TranslateUtils.buildExprNode(expr, iInfo.getTypeCheckCtx());
    ExprNodeEvaluator exprEval = WindowingExprNodeEvaluatorFactory.get(qDef.getTranslationInfo(), exprNode);
    ObjectInspector oi = TranslateUtils.initExprNodeEvaluator(qDef, exprNode, exprEval, iInfo);
    cDef.setExpression(expr);
    cDef.setExprNode(exprNode);
    cDef.setExprEvaluator(exprEval);
    cDef.setOI(oi);
    cDef.setAlias(cSpec.getColumnName());
}

Example 4 with ASTNode

use of org.apache.hadoop.hive.ql.parse.ASTNode in project SQLWindowing by hbutani.

the class SerializationUtils method addAntlrPersistenceDelegates.

public static void addAntlrPersistenceDelegates(XMLEncoder e) {
    e.setPersistenceDelegate(ASTNode.class, new PersistenceDelegate() {

        protected Expression instantiate(Object oldInstance, Encoder out) {
            return new Expression(oldInstance, oldInstance.getClass(), "new", new Object[] { ((ASTNode) oldInstance).getToken() });
        }
    });
    e.setPersistenceDelegate(CommonTree.class, new PersistenceDelegate() {

        protected Expression instantiate(Object oldInstance, Encoder out) {
            return new Expression(oldInstance, oldInstance.getClass(), "new", new Object[] { ((CommonTree) oldInstance).getToken() });
        }
    });
    e.setPersistenceDelegate(BaseTree.class, new PersistenceDelegate() {

        protected Expression instantiate(Object oldInstance, Encoder out) {
            return new Expression(oldInstance, oldInstance.getClass(), "new", new Object[] {});
        }

        @SuppressWarnings("rawtypes")
        protected void initialize(Class type, Object oldInstance, Object newInstance, Encoder out) {
            super.initialize(type, oldInstance, newInstance, out);
            BaseTree t = (BaseTree) oldInstance;
            for (int i = 0; i < t.getChildCount(); i++) {
                out.writeStatement(new Statement(oldInstance, "addChild", new Object[] { t.getChild(i) }));
            }
        }
    });
    e.setPersistenceDelegate(CommonToken.class, new PersistenceDelegate() {

        protected Expression instantiate(Object oldInstance, Encoder out) {
            return new Expression(oldInstance, oldInstance.getClass(), "new", new Object[] { ((CommonToken) oldInstance).getType(), ((CommonToken) oldInstance).getText() });
        }
    });
}

Example 5 with ASTNode

use of org.apache.hadoop.hive.ql.parse.ASTNode in project hive by apache.

the class Driver method compile.

// deferClose indicates if the close/destroy should be deferred when the process has been
// interrupted, it should be set to true if the compile is called within another method like
// runInternal, which defers the close to the called in that method.
private void compile(String command, boolean resetTaskIds, boolean deferClose) throws CommandProcessorResponse {
    PerfLogger perfLogger = SessionState.getPerfLogger(true);
    perfLogger.PerfLogBegin(CLASS_NAME, PerfLogger.DRIVER_RUN);
    perfLogger.PerfLogBegin(CLASS_NAME, PerfLogger.COMPILE);
    lDrvState.stateLock.lock();
    try {
        lDrvState.driverState = DriverState.COMPILING;
    } finally {
        lDrvState.stateLock.unlock();
    }
    command = new VariableSubstitution(new HiveVariableSource() {

        @Override
        public Map<String, String> getHiveVariable() {
            return SessionState.get().getHiveVariables();
        }
    }).substitute(conf, command);
    String queryStr = command;
    try {
        // command should be redacted to avoid to logging sensitive data
        queryStr = HookUtils.redactLogString(conf, command);
    } catch (Exception e) {
        LOG.warn("WARNING! Query command could not be redacted." + e);
    }
    checkInterrupted("at beginning of compilation.", null, null);
    if (ctx != null && ctx.getExplainAnalyze() != AnalyzeState.RUNNING) {
        // close the existing ctx etc before compiling a new query, but does not destroy driver
        closeInProcess(false);
    }
    if (resetTaskIds) {
        TaskFactory.resetId();
    }
    LockedDriverState.setLockedDriverState(lDrvState);
    String queryId = queryState.getQueryId();
    if (ctx != null) {
        setTriggerContext(queryId);
    }
    // save some info for webUI for use after plan is freed
    this.queryDisplay.setQueryStr(queryStr);
    this.queryDisplay.setQueryId(queryId);
    LOG.info("Compiling command(queryId=" + queryId + "): " + queryStr);
    conf.setQueryString(queryStr);
    // FIXME: sideeffect will leave the last query set at the session level
    SessionState.get().getConf().setQueryString(queryStr);
    SessionState.get().setupQueryCurrentTimestamp();
    // Whether any error occurred during query compilation. Used for query lifetime hook.
    boolean compileError = false;
    boolean parseError = false;
    try {
        // Initialize the transaction manager.  This must be done before analyze is called.
        if (initTxnMgr != null) {
            queryTxnMgr = initTxnMgr;
        } else {
            queryTxnMgr = SessionState.get().initTxnMgr(conf);
        }
        if (queryTxnMgr instanceof Configurable) {
            ((Configurable) queryTxnMgr).setConf(conf);
        }
        queryState.setTxnManager(queryTxnMgr);
        // In case when user Ctrl-C twice to kill Hive CLI JVM, we want to release locks
        // if compile is being called multiple times, clear the old shutdownhook
        ShutdownHookManager.removeShutdownHook(shutdownRunner);
        final HiveTxnManager txnMgr = queryTxnMgr;
        shutdownRunner = new Runnable() {

            @Override
            public void run() {
                try {
                    releaseLocksAndCommitOrRollback(false, txnMgr);
                } catch (LockException e) {
                    LOG.warn("Exception when releasing locks in ShutdownHook for Driver: " + e.getMessage());
                }
            }
        };
        ShutdownHookManager.addShutdownHook(shutdownRunner, SHUTDOWN_HOOK_PRIORITY);
        checkInterrupted("before parsing and analysing the query", null, null);
        if (ctx == null) {
            ctx = new Context(conf);
            setTriggerContext(queryId);
        }
        ctx.setRuntimeStatsSource(runtimeStatsSource);
        ctx.setCmd(command);
        ctx.setHDFSCleanup(true);
        perfLogger.PerfLogBegin(CLASS_NAME, PerfLogger.PARSE);
        // Trigger query hook before compilation
        hookRunner.runBeforeParseHook(command);
        ASTNode tree;
        try {
            tree = ParseUtils.parse(command, ctx);
        } catch (ParseException e) {
            parseError = true;
            throw e;
        } finally {
            hookRunner.runAfterParseHook(command, parseError);
        }
        perfLogger.PerfLogEnd(CLASS_NAME, PerfLogger.PARSE);
        hookRunner.runBeforeCompileHook(command);
        perfLogger.PerfLogBegin(CLASS_NAME, PerfLogger.ANALYZE);
        // Flush the metastore cache.  This assures that we don't pick up objects from a previous
        // query running in this same thread.  This has to be done after we get our semantic
        // analyzer (this is when the connection to the metastore is made) but before we analyze,
        // because at that point we need access to the objects.
        Hive.get().getMSC().flushCache();
        BaseSemanticAnalyzer sem;
        // Do semantic analysis and plan generation
        if (hookRunner.hasPreAnalyzeHooks()) {
            HiveSemanticAnalyzerHookContext hookCtx = new HiveSemanticAnalyzerHookContextImpl();
            hookCtx.setConf(conf);
            hookCtx.setUserName(userName);
            hookCtx.setIpAddress(SessionState.get().getUserIpAddress());
            hookCtx.setCommand(command);
            hookCtx.setHiveOperation(queryState.getHiveOperation());
            tree = hookRunner.runPreAnalyzeHooks(hookCtx, tree);
            sem = SemanticAnalyzerFactory.get(queryState, tree);
            openTransaction();
            sem.analyze(tree, ctx);
            hookCtx.update(sem);
            hookRunner.runPostAnalyzeHooks(hookCtx, sem.getAllRootTasks());
        } else {
            sem = SemanticAnalyzerFactory.get(queryState, tree);
            openTransaction();
            sem.analyze(tree, ctx);
        }
        LOG.info("Semantic Analysis Completed");
        // Retrieve information about cache usage for the query.
        if (conf.getBoolVar(HiveConf.ConfVars.HIVE_QUERY_RESULTS_CACHE_ENABLED)) {
            cacheUsage = sem.getCacheUsage();
        }
        // validate the plan
        sem.validate();
        perfLogger.PerfLogEnd(CLASS_NAME, PerfLogger.ANALYZE);
        checkInterrupted("after analyzing query.", null, null);
        // get the output schema
        schema = getSchema(sem, conf);
        plan = new QueryPlan(queryStr, sem, perfLogger.getStartTime(PerfLogger.DRIVER_RUN), queryId, queryState.getHiveOperation(), schema);
        conf.set("mapreduce.workflow.id", "hive_" + queryId);
        conf.set("mapreduce.workflow.name", queryStr);
        // initialize FetchTask right here
        if (plan.getFetchTask() != null) {
            plan.getFetchTask().initialize(queryState, plan, null, ctx.getOpContext());
        }
        // do the authorization check
        if (!sem.skipAuthorization() && HiveConf.getBoolVar(conf, HiveConf.ConfVars.HIVE_AUTHORIZATION_ENABLED)) {
            try {
                perfLogger.PerfLogBegin(CLASS_NAME, PerfLogger.DO_AUTHORIZATION);
                doAuthorization(queryState.getHiveOperation(), sem, command);
            } catch (AuthorizationException authExp) {
                console.printError("Authorization failed:" + authExp.getMessage() + ". Use SHOW GRANT to get more details.");
                errorMessage = authExp.getMessage();
                SQLState = "42000";
                throw createProcessorResponse(403);
            } finally {
                perfLogger.PerfLogEnd(CLASS_NAME, PerfLogger.DO_AUTHORIZATION);
            }
        }
        if (conf.getBoolVar(ConfVars.HIVE_LOG_EXPLAIN_OUTPUT)) {
            String explainOutput = getExplainOutput(sem, plan, tree);
            if (explainOutput != null) {
                LOG.info("EXPLAIN output for queryid " + queryId + " : " + explainOutput);
                if (conf.isWebUiQueryInfoCacheEnabled()) {
                    queryDisplay.setExplainPlan(explainOutput);
                }
            }
        }
    } catch (CommandProcessorResponse cpr) {
        throw cpr;
    } catch (Exception e) {
        checkInterrupted("during query compilation: " + e.getMessage(), null, null);
        compileError = true;
        ErrorMsg error = ErrorMsg.getErrorMsg(e.getMessage());
        errorMessage = "FAILED: " + e.getClass().getSimpleName();
        if (error != ErrorMsg.GENERIC_ERROR) {
            errorMessage += " [Error " + error.getErrorCode() + "]:";
        }
        // HIVE-4889
        if ((e instanceof IllegalArgumentException) && e.getMessage() == null && e.getCause() != null) {
            errorMessage += " " + e.getCause().getMessage();
        } else {
            errorMessage += " " + e.getMessage();
        }
        if (error == ErrorMsg.TXNMGR_NOT_ACID) {
            errorMessage += ". Failed command: " + queryStr;
        }
        SQLState = error.getSQLState();
        downstreamError = e;
        console.printError(errorMessage, "\n" + org.apache.hadoop.util.StringUtils.stringifyException(e));
        throw createProcessorResponse(error.getErrorCode());
    } finally {
        // before/after execution hook will never be executed.
        if (!parseError) {
            try {
                hookRunner.runAfterCompilationHook(command, compileError);
            } catch (Exception e) {
                LOG.warn("Failed when invoking query after-compilation hook.", e);
            }
        }
        double duration = perfLogger.PerfLogEnd(CLASS_NAME, PerfLogger.COMPILE) / 1000.00;
        ImmutableMap<String, Long> compileHMSTimings = dumpMetaCallTimingWithoutEx("compilation");
        queryDisplay.setHmsTimings(QueryDisplay.Phase.COMPILATION, compileHMSTimings);
        boolean isInterrupted = lDrvState.isAborted();
        if (isInterrupted && !deferClose) {
            closeInProcess(true);
        }
        lDrvState.stateLock.lock();
        try {
            if (isInterrupted) {
                lDrvState.driverState = deferClose ? DriverState.EXECUTING : DriverState.ERROR;
            } else {
                lDrvState.driverState = compileError ? DriverState.ERROR : DriverState.COMPILED;
            }
        } finally {
            lDrvState.stateLock.unlock();
        }
        if (isInterrupted) {
            LOG.info("Compiling command(queryId=" + queryId + ") has been interrupted after " + duration + " seconds");
        } else {
            LOG.info("Completed compiling command(queryId=" + queryId + "); Time taken: " + duration + " seconds");
        }
    }
}