Hot Fix 5.2.2 for SAS Event Stream Processing addresses the following issues:

Here are the fixes:

• Made the guid() function thread safe.
• Fixed failure when using the Pub/Sub index in logging.
• When extracting events in use from patterns, defensively code in the case of a NULL event.
• Fixed issue with the 206 HTTP status code (partial content) being returned incorrectly.
• Changed the log level of the pattern message (number of open instances) from info to debug.
• Made the Base64 decoding function thread safe in functional windows.
• Patched the RGX class with some fixes to group-based regexes.
• Allowed Kafka connector to continue after it logs an error showing "RdKafka event callback: type = EVENT_ERROR".
• Fixed random server failure when recycling a Streamviewer browser window.
• Fixed Kafka connector failing to start when its project is restarted.
• Fixed Kafka publisher support for reading from all partitions in a topic that does not already exist.
• Fixed random failure when a publisher connector or its project is stopped.
• Fixed Kafka client transport subscriber support for reading from all Kafka partitions and reading a topic with a configured group ID.
• Fixed Kafka subscriber connector failing to go failover active when it is started after other failover enabled connectors have started.
• Fixed Base64 decoding of the WebSphere MQ correlation ID.
• Prevented failure on message logging when a splitter produces an invalid slot.
• Fixed random failure in TCMalloc when running the ESP server or C++ adapters.
• Fixed ESP router opening too many files, window modify dropping all subscribers, and ESP router re-subscribing when the Pub/Sub connection drops.
• Fixed an unreleased lock when a persist fails. 
• Added more meaningful log messages about the failure of persist/restore.
• Fixed the meta window check on the external injection of metering events.  
• Changed calls to select() to use poll() in order to fix the memory overwrite issue.
• Changed functional window processing for update blocks to not copy the input event to fix a memory leak.

Here are the enhancements:

• Added maxnumrows and periodicity to the CAS adapter subscriber to periodically close and reopen the addTable action.
• Added support for unlogged batches to the Cassandra subscriber adapter.
• Added configurable heartbeat to the RabbitMQ client transport publisher.
• Added the RMQ subscriber connector optional usedeliverytagmsgid parameter to use the RabbitMQ delivery tag as the failover message ID.

Click the Hot Fix tab in this note for a link to instructions about accessing and applying the software update.

Operating System and Release Information

An update for this issue is available for SAS Event Stream Processing Studio 5.2. For instructions on how to access and apply this software update see the SAS Event Stream Processing 5.2 Deployment Guide links on