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From "Hanifi Gunes (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-1417) Query against directory of JSON files no longer works in 0.5
Date Wed, 22 Oct 2014 17:39:33 GMT

    [ https://issues.apache.org/jira/browse/DRILL-1417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14180220#comment-14180220
] 

Hanifi Gunes commented on DRILL-1417:
-------------------------------------

Can you run the same query with count(column_name)?

> Query against directory of JSON files no longer works in 0.5
> ------------------------------------------------------------
>
>                 Key: DRILL-1417
>                 URL: https://issues.apache.org/jira/browse/DRILL-1417
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 0.5.0
>         Environment: Apache Drill Sandbox (http://builds.qa.lab/vm/ova/?C=M;O=A) running
on VirtualBox VM. 
> You can also access the same logs data set as follows:
> ssh root@andypdemo0 [pswd = mapr]
> cd /mapr/demorig/data/flat
>            Reporter: Bob Rumsby
>
> This query was working on an earlier build (somewhere between the 0.4 and 0.5 releases)
but no longer works:
> 0: jdbc:drill:> select dir1 month_no, count(*) month_count from logs where dir0=2014
group by dir1 order by dir1;
> Query failed: Failure while running fragment. json record reader requires at least a
column [90feae61-fcfa-427f-b0bf-4a06563aa9a9]
> Error: exception while executing query: Failure while trying to get next result batch.
(state=,code=0)
> Let me know if I should open a Jira, or if I need to rewrite the query. I am using the
latest build of the MapR Sandbox for Drill from http://builds.qa.lab/vm/ova/?C=M;O=A
> The old result of the query is here:
> 0: jdbc:drill:> select dir1 month_no, count(*) month_count from logs where dir0=2014
group by dir1 order by dir1;
> +------------+-------------+
> |  month_no  | month_count |
> +------------+-------------+
> | 1          | 1741        |
> | 2          | 1538        |
> | 3          | 1689        |
> | 4          | 1675        |
> | 5          | 1738        |
> | 6          | 1653        |
> | 7          | 1745        |
> | 8          | 221         |
> +------------+-------------+
> 8 rows selected
> EXPLAIN TEXT
> ---------------------
> 0: jdbc:drill:> explain plan for select dir1 month_no, count(*) month_count from logs
where dir0=2014 group by dir1 order by dir1;
> +------------+------------+
> |    text    |    json    |
> +------------+------------+
> | 00-00    Screen
> 00-01      Project(month_no=[$0], month_count=[$1])
> 00-02        SelectionVectorRemover
> 00-03          Sort(sort0=[$0], dir0=[ASC])
> 00-04            Project(month_no=[$0], month_count=[$1])
> 00-05              HashAgg(group=[{0}], month_count=[COUNT()])
> 00-06                Project(dir1=[$0])
> 00-07                  SelectionVectorRemover
> 00-08                    Filter(condition=[=(CAST($1):INTEGER, 2014)])
> 00-09                      Scan(groupscan=[EasyGroupScan [selectionRoot=/mapr/demo.mapr.com/data/flat/logs,
columns = [SchemaPath [`dir1`], SchemaPath [`dir0`]]]])
>  | {
>   "head" : {
>     "version" : 1,
>     "generator" : {
>       "type" : "ExplainHandler",
>       "info" : ""
>     },
>     "type" : "APACHE_DRILL_PHYSICAL",
>     "options" : [ ],
>     "queue" : 0,
>     "resultMode" : "EXEC"
>   },
>   "graph" : [ {
>     "pop" : "fs-scan",
>     "@id" : 9,
>     "files" : [ "maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/8/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/11/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/6/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/12/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/3/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/4/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/5/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/1/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/7/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/2/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/9/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2012/10/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/8/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/11/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/6/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/12/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/3/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/4/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/5/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/1/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/7/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/2/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/9/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2013/10/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/8/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/6/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/3/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/4/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/5/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/1/log.json", "maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/7/log.json",
"maprfs:/mapr/demo.mapr.com/data/flat/logs/2014/2/log.json" ],
>     "storage" : {
>       "type" : "file",
>       "enabled" : true,
>       "connection" : "maprfs:///",
>       "workspaces" : {
>         "root" : {
>           "location" : "/",
>           "writable" : false,
>           "storageformat" : null
>         },
>         "data" : {
>           "location" : "/mapr/demo.mapr.com/data",
>           "writable" : false,
>           "storageformat" : null
>         },
>         "clicks" : {
>           "location" : "/mapr/demo.mapr.com/data/nested",
>           "writable" : true,
>           "storageformat" : "parquet"
>         },
>         "logs" : {
>           "location" : "/mapr/demo.mapr.com/data/flat",
>           "writable" : true,
>           "storageformat" : "parquet"
>         },
>         "views" : {
>           "location" : "/mapr/demo.mapr.com/data/views",
>           "writable" : true,
>           "storageformat" : "parquet"
>         },
>         "tmp" : {
>           "location" : "/tmp",
>           "writable" : true,
>           "storageformat" : "csv"
>         }
>       },
>       "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" : [ "`dir1`", "`dir0`" ],
>     "selectionRoot" : "/mapr/demo.mapr.com/data/flat/logs",
>     "cost" : 7731.0
>   }, {
>     "pop" : "filter",
>     "@id" : 8,
>     "child" : 9,
>     "expr" : "equal(cast( (`dir0` ) as INT ), 2014) ",
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 1159.6499999999999
>   }, {
>     "pop" : "selection-vector-remover",
>     "@id" : 7,
>     "child" : 8,
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 1159.6499999999999
>   }, {
>     "pop" : "project",
>     "@id" : 6,
>     "exprs" : [ {
>       "ref" : "`dir1`",
>       "expr" : "`dir1`"
>     } ],
>     "child" : 7,
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 1159.6499999999999
>   }, {
>     "pop" : "hash-aggregate",
>     "@id" : 5,
>     "child" : 6,
>     "cardinality" : 1.0,
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 579.8249999999999,
>     "groupByExprs" : [ {
>       "ref" : "`dir1`",
>       "expr" : "`dir1`"
>     } ],
>     "aggrExprs" : [ {
>       "ref" : "`month_count`",
>       "expr" : "count(1) "
>     } ]
>   }, {
>     "pop" : "project",
>     "@id" : 4,
>     "exprs" : [ {
>       "ref" : "`month_no`",
>       "expr" : "`dir1`"
>     }, {
>       "ref" : "`month_count`",
>       "expr" : "`month_count`"
>     } ],
>     "child" : 5,
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 115.96499999999999
>   }, {
>     "pop" : "external-sort",
>     "@id" : 3,
>     "child" : 4,
>     "orderings" : [ {
>       "order" : "ASC",
>       "expr" : "`month_no`",
>       "nullDirection" : "UNSPECIFIED"
>     } ],
>     "reverse" : false,
>     "initialAllocation" : 20000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 115.96499999999999
>   }, {
>     "pop" : "selection-vector-remover",
>     "@id" : 2,
>     "child" : 3,
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 115.96499999999999
>   }, {
>     "pop" : "project",
>     "@id" : 1,
>     "exprs" : [ {
>       "ref" : "`month_no`",
>       "expr" : "`month_no`"
>     }, {
>       "ref" : "`month_count`",
>       "expr" : "`month_count`"
>     } ],
>     "child" : 2,
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 115.96499999999999
>   }, {
>     "pop" : "screen",
>     "@id" : 0,
>     "child" : 1,
>     "initialAllocation" : 1000000,
>     "maxAllocation" : 10000000000,
>     "cost" : 115.96499999999999
>   } ]
> } |
> +------------+------------+
> 1 row selected (0.86 seconds)



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