Krystal created DRILL-4720: ------------------------------ Summary: MINDIR() and IMINDIR() functions return no results with metadata cache Key: DRILL-4720 URL: https://issues.apache.org/jira/browse/DRILL-4720 Project: Apache Drill Issue Type: Bug Components: Functions - Drill Affects Versions: 1.7.0 Reporter: Krystal
Parquet directories with meta data cache return 0 rows for MINDIR and IMINDIR functions. hadoop fs -ls /tmp/querylogs_4 Found 6 items -rwxr-xr-x 3 mapr mapr 15406 2016-06-13 10:18 /tmp/querylogs_4/.drill.parquet_metadata drwxr-xr-x - root root 4 2016-06-13 10:18 /tmp/querylogs_4/1985 drwxr-xr-x - root root 3 2016-06-13 10:18 /tmp/querylogs_4/1999 drwxr-xr-x - root root 3 2016-06-13 10:18 /tmp/querylogs_4/2005 drwxr-xr-x - root root 4 2016-06-13 10:18 /tmp/querylogs_4/2014 drwxr-xr-x - root root 6 2016-06-13 10:18 /tmp/querylogs_4/2016 hadoop fs -ls /tmp/querylogs_4/1985 Found 4 items -rwxr-xr-x 3 mapr mapr 3634 2016-06-13 10:18 /tmp/querylogs_4/1985/.drill.parquet_metadata drwxr-xr-x - root root 2 2016-06-13 10:18 /tmp/querylogs_4/1985/Feb drwxr-xr-x - root root 2 2016-06-13 10:18 /tmp/querylogs_4/1985/apr drwxr-xr-x - root root 2 2016-06-13 10:18 /tmp/querylogs_4/1985/jan SELECT * FROM `dfs.tmp`.`querylogs_4` WHERE dir0 = MINDIR('dfs.tmp','querylogs_4'); +-----------+-------+------+---------------+----------------+------------+------------+-------+-------+-------+ | voter_id | name | age | registration | contributions | voterzone | date_time | dir0 | dir1 | dir2 | +-----------+-------+------+---------------+----------------+------------+------------+-------+-------+-------+ +-----------+-------+------+---------------+----------------+------------+------------+-------+-------+-------+ No rows selected (0.803 seconds) If the meta cache is removed, expected data is returned. Here is the physical plan: {code} 00-00 Screen : rowType = RecordType(ANY *): rowcount = 3.75, cumulative cost = {54.125 rows, 169.125 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664191 00-01 Project(*=[$0]) : rowType = RecordType(ANY *): rowcount = 3.75, cumulative cost = {53.75 rows, 168.75 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664190 00-02 Project(T51¦¦*=[$0]) : rowType = RecordType(ANY T51¦¦*): rowcount = 3.75, cumulative cost = {53.75 rows, 168.75 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664189 00-03 SelectionVectorRemover : rowType = RecordType(ANY T51¦¦*, ANY dir0): rowcount = 3.75, cumulative cost = {53.75 rows, 168.75 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664188 00-04 Filter(condition=[=($1, '.drill.parquet_metadata')]) : rowType = RecordType(ANY T51¦¦*, ANY dir0): rowcount = 3.75, cumulative cost = {50.0 rows, 165.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664187 00-05 Project(T51¦¦*=[$0], dir0=[$1]) : rowType = RecordType(ANY T51¦¦*, ANY dir0): rowcount = 25.0, cumulative cost = {25.0 rows, 50.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664186 00-06 Scan(groupscan=[ParquetGroupScan [entries=[ReadEntryWithPath [path=/tmp/querylogs_4/2005/May/voter25.parquet/0_0_0.parquet]], selectionRoot=/tmp/querylogs_4, numFiles=1, usedMetadataFile=true, columns=[`*`]]]) : rowType = (DrillRecordRow[*, dir0]): rowcount = 25.0, cumulative cost = {25.0 rows, 50.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664185 {code} Here is the plan for the same query against the same directory structure without meta data cache: {code} 00-00 Screen : rowType = RecordType(ANY *): rowcount = 75.0, cumulative cost = {82.5 rows, 157.5 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664312 00-01 Project(*=[$0]) : rowType = RecordType(ANY *): rowcount = 75.0, cumulative cost = {75.0 rows, 150.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664311 00-02 Project(*=[$0]) : rowType = RecordType(ANY *): rowcount = 75.0, cumulative cost = {75.0 rows, 150.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664310 00-03 Scan(groupscan=[ParquetGroupScan [entries=[ReadEntryWithPath [path=maprfs:///tmp/querylogs_1/1985/Feb/voter10.parquet/0_0_0.parquet], ReadEntryWithPath [path=maprfs:///tmp/querylogs_1/1985/jan/voter5.parquet/0_0_0.parquet], ReadEntryWithPath [path=maprfs:///tmp/querylogs_1/1985/apr/voter65.parquet/0_0_0.parquet]], selectionRoot=maprfs:/tmp/querylogs_1, numFiles=3, usedMetadataFile=false, columns=[`*`]]]) : rowType = (DrillRecordRow[*, dir0]): rowcount = 75.0, cumulative cost = {75.0 rows, 150.0 cpu, 0.0 io, 0.0 network, 0.0 memory}, id = 664309 {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)