Re: Data ingestion failing when using higher Batch size

On 06/14/2016 09:33 AM, Rupesh Choudhary wrote:

Hi Team ,

We have been  trying to insert data (batch inserts) using a JAVA app
which uses prepared statements  with parameterized queries to insert
data .We are able to insert data with small batch size  however when we
increase the batch size to a higher value data ingestion fails . We are
using pgbouncer for connection pooling on database side which is running
in session mode  and server_reset_query set to "DISCARD ALL" . Please
suggest the how can we bulk load data with higher batch size .Below the
error logs that we are getting from the application end.

Interpreting the below is difficult without information on the actual code/SQL being run.

So:

What is the SQL you are running?

How is that being run in the code?

Define small vs large batch sizes?

What is the tool chain you are using to go from Java to Postgres?

Below are the logs from application :-

*2016-06-07T11:33:04.50-0700 [App/2]*      OUT at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2959)
~[postgresql-9.4-1205-jdbc41.jar!/:9.4]

*2016-06-07T11:33:04.50-0700 [App/2]*      OUT at
com.exelon.drillinginfo.service.PdenDescService.createDrillingInfo(PdenDescService.java:337)
~[app/:na]

*2016-06-07T11:34:35.04-0700 [App/1]*      OUT 2016-06-07 18:34:35.048
INFO 29 --- [io-64887-exec-1] c.e.d.service.PdenDescService            :
Run id: 33842

*2016-06-07T11:34:35.05-0700 [App/1]*      OUT 2016-06-07 18:34:35.051
INFO 29 --- [io-64887-exec-1] c.e.d.service.PdenDescService            :
running inserts
********---------------------------------------------------------------***********

*2016-06-07T11:34:35.05-0700 [App/1]*      OUT 2016-06-07 18:34:35.058
INFO 29 --- [io-64887-exec-1] c.e.d.service.PdenDescService            :
running inserts
********---------------------------------------------------------------***********

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR
org.postgresql.util.PSQLException: ERROR: prepared statement "S_3" does
not exist

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2182)

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1911)

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:338)

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeBatch(AbstractJdbc2Statement.java:2959)

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR at
com.exelon.drillinginfo.service.PdenDescService.createDrillingInfo(PdenDescService.java:337)

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR at
com.exelon.drillinginfo.service.PdenDescService$$FastClassBySpringCGLIB$$3080db7d.invoke(<generated>)

*2016-06-07T11:34:35.06-0700 [App/1]*      ERR at
org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)



Thanks & Regards,
Rupesh Choudhary

--
Adrian Klaver
adrian.klaver@aklaver.com