IPP Software Navigation Tools IPP Links Communication Pan-STARRS Links

Changes between Version 19 and Version 20 of PS1_IPP_Czarlog_20141208


Ignore:
Timestamp:
Dec 9, 2014, 1:07:21 PM (12 years ago)
Author:
Mark Huber
Comment:

--

Legend:

Unmodified
Added
Removed
Modified
  • PS1_IPP_Czarlog_20141208

    v19 v20  
    2828 * 07:45 EAM : processing has been limping along, with a number of the 'table full' errors.  there is enough room on the disk after Serge purged the binary logs, so that is not the cause.  the tables are big, but not approaching the InnoDB 64 TB max values.  The load on the machine (ippdb00) is modest (3-4).  I am guessing that a restart of mysql might clear out something which is cached?
    2929 * 08:10 EAM : more research has revealed the likely cause: the number of concurrent transactions was too large (the full disk probably also triggered this).  I turned down the number of nodes doing cleanup and this seems to be making things better (lower error rate).  the following mysql bug report is relevant (and points out that 5.5.xx has bumped the transaction limit): http://bugs.mysql.com/bug.php?id=26590
     30  * [wiki:PS1_IPP_Czarlog_20141201#Saturday:2014.12.06] -- when looking at the logs on saturday after powerup seems like we have been hitting this since mid-october
    3031 * 08:15 EAM : addendum: this is probably not as critical, but we may want to bump the ibdata file.  this is from the mysql manual (http://dev.mysql.com/doc/refman/5.0/en/innodb-data-log-reconfiguration.html)
    3132