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From "liyunzhang_intel (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HIVE-17182) Invalid statistics like "RAW DATA SIZE" info for parquet file
Date Thu, 27 Jul 2017 08:33:00 GMT

     [ https://issues.apache.org/jira/browse/HIVE-17182?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

liyunzhang_intel updated HIVE-17182:
------------------------------------
    Description: 
on TPC-DS 200g scale store_sales
use "describe formatted store_sales" to view the statistics
{code}
hive> describe formatted store_sales;
OK
# col_name            	data_type           	comment             
	 	 
ss_sold_time_sk     	bigint              	                    
ss_item_sk          	bigint              	                    
ss_customer_sk      	bigint              	                    
ss_cdemo_sk         	bigint              	                    
ss_hdemo_sk         	bigint              	                    
ss_addr_sk          	bigint              	                    
ss_store_sk         	bigint              	                    
ss_promo_sk         	bigint              	                    
ss_ticket_number    	bigint              	                    
ss_quantity         	int                 	                    
ss_wholesale_cost   	double              	                    
ss_list_price       	double              	                    
ss_sales_price      	double              	                    
ss_ext_discount_amt 	double              	                    
ss_ext_sales_price  	double              	                    
ss_ext_wholesale_cost	double              	                    
ss_ext_list_price   	double              	                    
ss_ext_tax          	double              	                    
ss_coupon_amt       	double              	                    
ss_net_paid         	double              	                    
ss_net_paid_inc_tax 	double              	                    
ss_net_profit       	double              	                    
	 	 
# Partition Information	 	 
# col_name            	data_type           	comment             
	 	 
ss_sold_date_sk     	bigint              	                    
	 	 
# Detailed Table Information	 	 
Database:           	tpcds_bin_partitioned_parquet_200	 
Owner:              	root                	 
CreateTime:         	Tue Jun 06 11:51:48 CST 2017	 
LastAccessTime:     	UNKNOWN             	 
Retention:          	0                   	 
Location:           	hdfs://bdpe38:9000/user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db/store_sales
 
Table Type:         	MANAGED_TABLE       	 
Table Parameters:	 	 
	COLUMN_STATS_ACCURATE	{\"BASIC_STATS\":\"true\"}
	numFiles            	2023                
	numPartitions       	1824                
	numRows             	575995635           
	rawDataSize         	12671903970         
	totalSize           	46465926745         
	transient_lastDdlTime	1496721108          
{code}
the rawDataSize is nearly 12G while the totalSize is nearly 46G.
view the original data on hdfs
{noformat}
#hadoop fs -du -h /tmp/tpcds-generate/200/
75.8 G   /tmp/tpcds-generate/200/store_sales
{noformat} 
view the parquet file on hdfs
{noformat}
# hadoop fs -du -h /user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db
43.3 G   /user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db/store_sales
{noformat}

It seems that the rawDataSize is nearly 75G but in "describe formatted store_sales" command,
it shows only 12G.


  was:
on TPC-DS 200g scale store_sales
use "describe formatted store_sales" to view the statistics
{code}
hive> describe formatted store_sales;
OK
# col_name            	data_type           	comment             
	 	 
ss_sold_time_sk     	bigint              	                    
ss_item_sk          	bigint              	                    
ss_customer_sk      	bigint              	                    
ss_cdemo_sk         	bigint              	                    
ss_hdemo_sk         	bigint              	                    
ss_addr_sk          	bigint              	                    
ss_store_sk         	bigint              	                    
ss_promo_sk         	bigint              	                    
ss_ticket_number    	bigint              	                    
ss_quantity         	int                 	                    
ss_wholesale_cost   	double              	                    
ss_list_price       	double              	                    
ss_sales_price      	double              	                    
ss_ext_discount_amt 	double              	                    
ss_ext_sales_price  	double              	                    
ss_ext_wholesale_cost	double              	                    
ss_ext_list_price   	double              	                    
ss_ext_tax          	double              	                    
ss_coupon_amt       	double              	                    
ss_net_paid         	double              	                    
ss_net_paid_inc_tax 	double              	                    
ss_net_profit       	double              	                    
	 	 
# Partition Information	 	 
# col_name            	data_type           	comment             
	 	 
ss_sold_date_sk     	bigint              	                    
	 	 
# Detailed Table Information	 	 
Database:           	tpcds_bin_partitioned_parquet_200	 
Owner:              	root                	 
CreateTime:         	Tue Jun 06 11:51:48 CST 2017	 
LastAccessTime:     	UNKNOWN             	 
Retention:          	0                   	 
Location:           	hdfs://bdpe38:9000/user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db/store_sales
 
Table Type:         	MANAGED_TABLE       	 
Table Parameters:	 	 
	COLUMN_STATS_ACCURATE	{\"BASIC_STATS\":\"true\"}
	numFiles            	2023                
	numPartitions       	1824                
	numRows             	575995635           
	rawDataSize         	12671903970         
	totalSize           	46465926745         
	transient_lastDdlTime	1496721108          
{code}
the rawDataSize is nearly 12G while the totalSize is nearly 46G.
view the original data on hdfs
{format}
#hadoop fs -du -h /tmp/tpcds-generate/200/
75.8 G   /tmp/tpcds-generate/200/store_sales
{format} 
view the parquet file on hdfs
{format}
# hadoop fs -du -h /user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db
43.3 G   /user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db/store_sales
{format}

It seems that the rawDataSize is nearly 75G but in "describe formatted store_sales" command,
it shows only 12G.



> Invalid statistics like "RAW DATA SIZE" info for parquet file
> -------------------------------------------------------------
>
>                 Key: HIVE-17182
>                 URL: https://issues.apache.org/jira/browse/HIVE-17182
>             Project: Hive
>          Issue Type: Bug
>            Reporter: liyunzhang_intel
>
> on TPC-DS 200g scale store_sales
> use "describe formatted store_sales" to view the statistics
> {code}
> hive> describe formatted store_sales;
> OK
> # col_name            	data_type           	comment             
> 	 	 
> ss_sold_time_sk     	bigint              	                    
> ss_item_sk          	bigint              	                    
> ss_customer_sk      	bigint              	                    
> ss_cdemo_sk         	bigint              	                    
> ss_hdemo_sk         	bigint              	                    
> ss_addr_sk          	bigint              	                    
> ss_store_sk         	bigint              	                    
> ss_promo_sk         	bigint              	                    
> ss_ticket_number    	bigint              	                    
> ss_quantity         	int                 	                    
> ss_wholesale_cost   	double              	                    
> ss_list_price       	double              	                    
> ss_sales_price      	double              	                    
> ss_ext_discount_amt 	double              	                    
> ss_ext_sales_price  	double              	                    
> ss_ext_wholesale_cost	double              	                    
> ss_ext_list_price   	double              	                    
> ss_ext_tax          	double              	                    
> ss_coupon_amt       	double              	                    
> ss_net_paid         	double              	                    
> ss_net_paid_inc_tax 	double              	                    
> ss_net_profit       	double              	                    
> 	 	 
> # Partition Information	 	 
> # col_name            	data_type           	comment             
> 	 	 
> ss_sold_date_sk     	bigint              	                    
> 	 	 
> # Detailed Table Information	 	 
> Database:           	tpcds_bin_partitioned_parquet_200	 
> Owner:              	root                	 
> CreateTime:         	Tue Jun 06 11:51:48 CST 2017	 
> LastAccessTime:     	UNKNOWN             	 
> Retention:          	0                   	 
> Location:           	hdfs://bdpe38:9000/user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db/store_sales
 
> Table Type:         	MANAGED_TABLE       	 
> Table Parameters:	 	 
> 	COLUMN_STATS_ACCURATE	{\"BASIC_STATS\":\"true\"}
> 	numFiles            	2023                
> 	numPartitions       	1824                
> 	numRows             	575995635           
> 	rawDataSize         	12671903970         
> 	totalSize           	46465926745         
> 	transient_lastDdlTime	1496721108          
> {code}
> the rawDataSize is nearly 12G while the totalSize is nearly 46G.
> view the original data on hdfs
> {noformat}
> #hadoop fs -du -h /tmp/tpcds-generate/200/
> 75.8 G   /tmp/tpcds-generate/200/store_sales
> {noformat} 
> view the parquet file on hdfs
> {noformat}
> # hadoop fs -du -h /user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db
> 43.3 G   /user/hive/warehouse/tpcds_bin_partitioned_parquet_200.db/store_sales
> {noformat}
> It seems that the rawDataSize is nearly 75G but in "describe formatted store_sales" command,
it shows only 12G.



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