Examples with RuleRegExp org.apache.hadoop.hive.ql.lib.RuleRegExp used on opensource projects

Example 41 with RuleRegExp

use of org.apache.hadoop.hive.ql.lib.RuleRegExp in project hive by apache.

the class SortedDynPartitionOptimizer method transform.

@Override
public ParseContext transform(ParseContext pCtx) throws SemanticException {
    // 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>();
    String FS = FileSinkOperator.getOperatorName() + "%";
    opRules.put(new RuleRegExp("Sorted Dynamic Partition", FS), getSortDynPartProc(pCtx));
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, null);
    GraphWalker ogw = new DefaultGraphWalker(disp);
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pCtx.getTopOps().values());
    ogw.startWalking(topNodes, null);
    return pCtx;
}

Example 42 with RuleRegExp

use of org.apache.hadoop.hive.ql.lib.RuleRegExp in project hive by apache.

the class SortedDynPartitionTimeGranularityOptimizer method transform.

@Override
public ParseContext transform(ParseContext pCtx) throws SemanticException {
    // 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>();
    String FS = FileSinkOperator.getOperatorName() + "%";
    opRules.put(new RuleRegExp("Sorted Dynamic Partition Time Granularity", FS), getSortDynPartProc(pCtx));
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, null);
    GraphWalker ogw = new DefaultGraphWalker(disp);
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pCtx.getTopOps().values());
    ogw.startWalking(topNodes, null);
    return pCtx;
}

Example 43 with RuleRegExp

use of org.apache.hadoop.hive.ql.lib.RuleRegExp in project hive by apache.

the class SortedMergeBucketMapJoinOptimizer method transform.

@Override
public ParseContext transform(ParseContext pctx) throws SemanticException {
    HiveConf conf = pctx.getConf();
    SortBucketJoinProcCtx smbJoinContext = new SortBucketJoinProcCtx(conf);
    // Get a list of joins which cannot be converted to a sort merge join
    // Only selects and filters operators are allowed between the table scan and
    // join currently. More operators can be added - the method supportAutomaticSortMergeJoin
    // dictates which operator is allowed
    getListOfRejectedJoins(pctx, smbJoinContext);
    Map<Rule, NodeProcessor> opRules = new LinkedHashMap<Rule, NodeProcessor>();
    // go through all map joins and find out all which have enabled bucket map
    // join.
    opRules.put(new RuleRegExp("R1", MapJoinOperator.getOperatorName() + "%"), getSortedMergeBucketMapjoinProc(pctx));
    // converted to sort-merge join
    if (HiveConf.getBoolVar(conf, HiveConf.ConfVars.HIVE_AUTO_SORTMERGE_JOIN)) {
        opRules.put(new RuleRegExp("R2", "JOIN%"), getSortedMergeJoinProc(pctx));
    }
    Dispatcher disp = new DefaultRuleDispatcher(getDefaultProc(), opRules, smbJoinContext);
    GraphWalker ogw = new DefaultGraphWalker(disp);
    // Create a list of topop nodes
    ArrayList<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pctx.getTopOps().values());
    ogw.startWalking(topNodes, null);
    return pctx;
}

Example 44 with RuleRegExp

use of org.apache.hadoop.hive.ql.lib.RuleRegExp in project hive by apache.

the class PartitionColumnsSeparator method transform.

@Override
public ParseContext transform(ParseContext pctx) throws SemanticException {
    // 1. Trigger transformation
    Map<Rule, NodeProcessor> opRules = new LinkedHashMap<Rule, NodeProcessor>();
    opRules.put(new RuleRegExp("R1", FilterOperator.getOperatorName() + "%"), new StructInTransformer());
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, null);
    GraphWalker ogw = new ForwardWalker(disp);
    List<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pctx.getTopOps().values());
    ogw.startWalking(topNodes, null);
    return pctx;
}

Example 45 with RuleRegExp

use of org.apache.hadoop.hive.ql.lib.RuleRegExp in project hive by apache.

the class HiveOpConverterPostProc method transform.

@Override
public ParseContext transform(ParseContext pctx) throws SemanticException {
    // 0. We check the conditions to apply this transformation,
    // if we do not meet them we bail out
    final boolean cboEnabled = HiveConf.getBoolVar(pctx.getConf(), HiveConf.ConfVars.HIVE_CBO_ENABLED);
    final boolean returnPathEnabled = HiveConf.getBoolVar(pctx.getConf(), HiveConf.ConfVars.HIVE_CBO_RETPATH_HIVEOP);
    final boolean cboSucceeded = pctx.getContext().isCboSucceeded();
    if (!(cboEnabled && returnPathEnabled && cboSucceeded)) {
        return pctx;
    }
    // 1. Initialize aux data structures
    this.pctx = pctx;
    this.aliasToOpInfo = new HashMap<String, Operator<? extends OperatorDesc>>();
    // 2. Trigger transformation
    Map<Rule, NodeProcessor> opRules = new LinkedHashMap<Rule, NodeProcessor>();
    opRules.put(new RuleRegExp("R1", JoinOperator.getOperatorName() + "%"), new JoinAnnotate());
    opRules.put(new RuleRegExp("R2", TableScanOperator.getOperatorName() + "%"), new TableScanAnnotate());
    Dispatcher disp = new DefaultRuleDispatcher(null, opRules, null);
    GraphWalker ogw = new ForwardWalker(disp);
    List<Node> topNodes = new ArrayList<Node>();
    topNodes.addAll(pctx.getTopOps().values());
    ogw.startWalking(topNodes, null);
    return pctx;
}