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merge from master

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expose only two kinds of inverted index(ngram and keyword) which internally use length-partitioned ngram/keyword inverted index

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Modify all the plans to use ONE_TO_ONE_EXCHANGE for result distribution operator.

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Merged asterix_lsm_stabilization upto r1547

git-svn-id: https://asterixdb.googlecode.com/svn/trunk/asterix@1622 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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Fix optimzer tests to work with DISTRIBUTE_RESULT operator.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization_result_distribution@1366 eaa15691-b419-025a-1212-ee371bd00084

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merged asterix_stabilization r620:1109

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization_temporal_functionality@1113 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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Enabled IntroduceProjectRule. Approved by Vinayak.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization@1008 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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Took care of Vinayak's review comments.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_fuzzy_perf@987 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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Re-substituted primary key variables in indexed fuzzy joins to better enable removal of the top-level equi join.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_fuzzy_perf@892 eaa15691-b419-025a-1212-ee371bd00084

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Changed expected query plans of index-based fuzzy joins, because we are now using a surrogate-optimized plan.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_fuzzy_perf@889 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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Merged asterix_stabilization r879:r881.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_fuzzy_perf@882 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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Enabled PushAssignBelowUnionAllRule in cleanup rule collection. The rule helps to trigger common sub-expression elimination which removes redundant edit distance computations in index-based fuzzy joins on edit distance.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization@881 eaa15691-b419-025a-1212-ee371bd00084

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Changes to expected plans corresponding to improvements in Algebricks rules.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization@879 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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Added rule to inline variables with a single reference to physical rewrite collection. Changed expected plans for optimizer tests since the plans have been improved (fewer assigns due to inlining).

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_inline_vars@802 eaa15691-b419-025a-1212-ee371bd00084

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Reintegrated asterix-fuzzy.

git-svn-id: https://asterixdb.googlecode.com/svn/branches/asterix_stabilization@437 eaa15691-b419-025a-1212-ee371bd00084

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    ./olist-edit-distance-check_01.plan
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