Sahil Takiar created HIVE-15396:
-----------------------------------
Summary: Basic Stats are not collected when running INSERT INTO
commands on s3a
Key: HIVE-15396
URL: https://issues.apache.org/jira/browse/HIVE-15396
Project: Hive
Issue Type: Bug
Components: Hive
Reporter: Sahil Takiar
Assignee: Sahil Takiar
{{numRows}} is not collected when running {{INSERT ... INTO ...}} commands
against tables backed by S3 (and maybe even other blobstores).
The {{COLUMN_STATS_ACCURATE={"BASIC_STATS":"true"}}} entry is missing from the
{{describe extended}} output.
Repro steps:
{code}
hive> drop table s3_table;
OK
Time taken: 1.87 seconds
hive> create table s3_table (col int) location
's3a://[bucket-name]/stats-test/';
OK
Time taken: 3.069 seconds
hive> insert into s3_table values (1), (2), (3);
WARNING: Hive-on-MR is deprecated in Hive 2 and may not be available in the
future versions. Consider using a different execution engine (i.e. spark, tez)
or using Hive 1.X releases.
Query ID = stakiar_20161208160105_fb3df340-d5fb-4ad6-8776-4f3cae02216d
Total jobs = 3
Launching Job 1 out of 3
Number of reduce tasks is set to 0 since there's no reduce operator
Job running in-process (local Hadoop)
2016-12-08 16:01:12,741 Stage-1 map = 0%, reduce = 0%
2016-12-08 16:01:16,759 Stage-1 map = 100%, reduce = 0%
Ended Job = job_local688636529_0004
Stage-4 is selected by condition resolver.
Stage-3 is filtered out by condition resolver.
Stage-5 is filtered out by condition resolver.
Loading data to table default.s3_table
MapReduce Jobs Launched:
Stage-Stage-1: HDFS Read: 0 HDFS Write: 0 SUCCESS
Total MapReduce CPU Time Spent: 0 msec
OK
Time taken: 23.0 seconds
hive> select * from s3_table;
OK
1
2
3
Time taken: 0.096 seconds, Fetched: 3 row(s)
hive> describe extended s3_table;
OK
col int
Detailed Table Information Table(tableName:s3_table, dbName:default,
owner:stakiar, createTime:1481241657, lastAccessTime:0, retention:0,
sd:StorageDescriptor(cols:[FieldSchema(name:col, type:int, comment:null)],
location:s3a://cloudera-dev-hive-on-s3/stats-test,
inputFormat:org.apache.hadoop.mapred.TextInputFormat,
outputFormat:org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat,
compressed:false, numBuckets:-1, serdeInfo:SerDeInfo(name:null,
serializationLib:org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe,
parameters:{serialization.format=1}), bucketCols:[], sortCols:[],
parameters:{}, skewedInfo:SkewedInfo(skewedColNames:[], skewedColValues:[],
skewedColValueLocationMaps:{}), storedAsSubDirectories:false),
partitionKeys:[], parameters:{transient_lastDdlTime=1481241687, totalSize=6,
numFiles=1}, viewOriginalText:null, viewExpandedText:null,
tableType:MANAGED_TABLE)
Time taken: 0.037 seconds, Fetched: 3 row(s)
{code}
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