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From "Bob Rumsby (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-1718) FLATTEN query returns "buffer is neither a method, a field, nor a member class..." error
Date Sat, 15 Nov 2014 02:27:33 GMT
Bob Rumsby created DRILL-1718:
---------------------------------

             Summary: FLATTEN query returns "buffer is neither a method, a field, nor a member
class..." error
                 Key: DRILL-1718
                 URL: https://issues.apache.org/jira/browse/DRILL-1718
             Project: Apache Drill
          Issue Type: Bug
          Components: Functions - Drill
    Affects Versions: 0.7.0
         Environment: 0.7.0 snapshot on MacOSX in embedded mode
            Reporter: Bob Rumsby


A query with a FLATTEN function and a WHERE clause constraint on the flattened column fails.

0: jdbc:drill:zk=local> select name, flatten(categories) as categories from dfs.yelp.`yelp_academic_dataset_business.json`
where categories='Pizza';
Query failed: Failure while running fragment., Line 68, Column 95: "buffer" is neither a method,
a field, nor a member class of "org.apache.drill.exec.expr.holders.RepeatedVarCharHolder"
[ 67016271-7266-4438-9529-d8330b1e39a4 on 10.250.0.28:31010 ]


Error: exception while executing query: Failure while executing query. (state=,code=0)
0: jdbc:drill:zk=local> explain plan for select name, flatten(categories) as categories
from dfs.yelp.`yelp_academic_dataset_business.json` where categories='Pizza';
+------------+------------+
|    text    |    json    |
+------------+------------+
| 00-00    Screen
00-01      Project(name=[$1], categories=[$2])
00-02        Flatten(flattenField=[$2])
00-03          Project(EXPR$0=[$0], EXPR$1=[$1], EXPR$2=[$0])
00-04            SelectionVectorRemover
00-05              Filter(condition=[=($0, 'Pizza')])
00-06                Scan(groupscan=[EasyGroupScan [selectionRoot=/Users/brumsby/drill/apache-drill-0.7.0-incubating-SNAPSHOT/yelpdata/yelp_academic_dataset_business.json,
numFiles=1, columns=[`categories`, `name`], files=[file:/Users/brumsby/drill/apache-drill-0.7.0-incubating-SNAPSHOT/yelpdata/yelp_academic_dataset_business.json]]])
 | {
  "head" : {
    "version" : 1,
    "generator" : {
      "type" : "ExplainHandler",
      "info" : ""
    },
    "type" : "APACHE_DRILL_PHYSICAL",
    "options" : [ ],
    "queue" : 0,
    "resultMode" : "EXEC"
  },
  "graph" : [ {
    "pop" : "fs-scan",
    "@id" : 6,
    "files" : [ "file:/Users/brumsby/drill/apache-drill-0.7.0-incubating-SNAPSHOT/yelpdata/yelp_academic_dataset_business.json"
],
    "storage" : {
      "type" : "file",
      "enabled" : true,
      "connection" : "file:///",
      "workspaces" : {
        "root" : {
          "location" : "/",
          "writable" : false,
          "defaultInputFormat" : null
        },
        "yelp" : {
          "location" : "/Users/brumsby/drill/apache-drill-0.7.0-incubating-SNAPSHOT/yelpdata",
          "writable" : true,
          "defaultInputFormat" : null
        }
      },
      "formats" : {
        "psv" : {
          "type" : "text",
          "extensions" : [ "tbl" ],
          "delimiter" : "|"
        },
        "csv" : {
          "type" : "text",
          "extensions" : [ "csv" ],
          "delimiter" : ","
        },
        "tsv" : {
          "type" : "text",
          "extensions" : [ "tsv" ],
          "delimiter" : "\t"
        },
        "parquet" : {
          "type" : "parquet"
        },
        "json" : {
          "type" : "json"
        }
      }
    },
    "format" : {
      "type" : "json"
    },
    "columns" : [ "`categories`", "`name`" ],
    "selectionRoot" : "/Users/brumsby/drill/apache-drill-0.7.0-incubating-SNAPSHOT/yelpdata/yelp_academic_dataset_business.json",
    "cost" : 36382.0
  }, {
    "pop" : "filter",
    "@id" : 5,
    "child" : 6,
    "expr" : "equal(`categories`, 'Pizza') ",
    "initialAllocation" : 1000000,
    "maxAllocation" : 10000000000,
    "cost" : 5457.3
  }, {
    "pop" : "selection-vector-remover",
    "@id" : 4,
    "child" : 5,
    "initialAllocation" : 1000000,
    "maxAllocation" : 10000000000,
    "cost" : 5457.3
  }, {
    "pop" : "project",
    "@id" : 3,
    "exprs" : [ {
      "ref" : "`EXPR$0`",
      "expr" : "`categories`"
    }, {
      "ref" : "`EXPR$1`",
      "expr" : "`name`"
    }, {
      "ref" : "`EXPR$2`",
      "expr" : "`categories`"
    } ],
    "child" : 4,
    "initialAllocation" : 1000000,
    "maxAllocation" : 10000000000,
    "cost" : 5457.3
  }, {
    "pop" : "flatten",
    "@id" : 2,
    "child" : 3,
    "column" : "`EXPR$2`",
    "initialAllocation" : 1000000,
    "maxAllocation" : 10000000000,
    "cost" : 5457.3
  }, {
    "pop" : "project",
    "@id" : 1,
    "exprs" : [ {
      "ref" : "`name`",
      "expr" : "`EXPR$1`"
    }, {
      "ref" : "`categories`",
      "expr" : "`EXPR$2`"
    } ],
    "child" : 2,
    "initialAllocation" : 1000000,
    "maxAllocation" : 10000000000,
    "cost" : 5457.3
  }, {
    "pop" : "screen",
    "@id" : 0,
    "child" : 1,
    "initialAllocation" : 1000000,
    "maxAllocation" : 10000000000,
    "cost" : 5457.3
  } ]
} |
+------------+------------+
1 row selected (0.115 seconds)
0: jdbc:drill:zk=local> 




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