On Wed, Oct 24, 2018 at 3:35 PM Mike Bayer <mike...@zzzcomputing.com> wrote:
> On Wed, Oct 24, 2018 at 4:54 PM Travis Briggs <audiod...@gmail.com> wrote: > > > > Hi, > > > > I'm trying to apply a unit of work pattern, where I'm processing all of > the "items" in a category, and I'm opening my session before I query for > the items in the category, then closing the session when the items are all > processed. > > > > However, this still could take several minutes and I'm getting the > "MySQL Server has gone away" message on the session.close() call. This > seems to be relatively innocuous: my app continues running and everything > is fine, apparently. Just to note, I am using pool_pre_ping=True. > > > > Just wondering if I should: > > > > Ignore this error, or > > Not be closing the session and just letting it get garbage collected. > > you shouldn't be getting that error and it is a sign something is not > working correctly. you'd need to review your session lifecycle > code. > > > I'm not in direct contact with the DBA for this app, but my understanding is that the database has very strict/limited timeouts for connections. Couldn't it be that the connection is simply timing out between the time I create it and the time I call session.close()? Would that be example of a problem with my session lifecycle code, that I'm just taking too long? Thanks, -Travis > > > > Thanks, > > -Travis > > > > -- > > SQLAlchemy - > > The Python SQL Toolkit and Object Relational Mapper > > > > http://www.sqlalchemy.org/ > > > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > > --- > > You received this message because you are subscribed to the Google > Groups "sqlalchemy" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to sqlalchemy+unsubscr...@googlegroups.com. > > To post to this group, send email to sqlalchemy@googlegroups.com. > > Visit this group at https://groups.google.com/group/sqlalchemy. > > For more options, visit https://groups.google.com/d/optout. > > -- > SQLAlchemy - > The Python SQL Toolkit and Object Relational Mapper > > http://www.sqlalchemy.org/ > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > --- > You received this message because you are subscribed to a topic in the > Google Groups "sqlalchemy" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/sqlalchemy/KaxgiVX-65k/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > sqlalchemy+unsubscr...@googlegroups.com. > To post to this group, send email to sqlalchemy@googlegroups.com. > Visit this group at https://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. > -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
