ContributionsMost RecentMost LikesSolutionsRe: Unable to write sldb file to file system If possible, please post a link to the pipeline execution that failed. Re: Unable to write sldb file to file system This means that account your Kafka Producer snap is using a file, probably a truststore, that it must copy from sldb to a temp directory on the local file system of the node that snap is running on before it can use it. For some reason that is failing. Please post or send the stack trace associated with that failure. (I believe the stalled thread warning is not relevant to this issue.) Re: Performance Optimization: Use Static Lookups Instead of Joins Very good post! Thank you. Re: Cloning Data Stream: Copy Snap vs Router Snap for Efficiency and Performance No, both snaps are single-threaded. Re: Cloning Data Stream: Copy Snap vs Router Snap for Efficiency and Performance The Copy snap will perform better. Re: Converting a string to JSON doesn't work Great! Good that you have control over the source of the string. Re: Converting a string to JSON doesn't work That's the only way since your string is definitely not valid JSON. You need it to look like this: {"language": "Tamil", "taskId": 123} Re: Convert array with objects into object with key/value pairs Attached is a pipeline to do this mapping. It looks like this: First Mapper: Second Mapper: Hope that helps! Re: JSON.stringify optional parameter not working in SL SnapLogic EL is roughly based on JavaScript but only supports a limited set of the JS functionality. Our JSON.stringify function only supports a single parameter: https://docs-snaplogic.atlassian.net/wiki/spaces/SD/pages/1439335/JSON+Functions+and+Properties#JSONFunctionsandProperties-stringify Re: Receiving Kafka Acknowledgement Time out Please send me a link to a pipeline execution which shows this issue.