[Solved] There was an error reading from the pipe: Unrecognized error 109 (0x6d)


If you are using netNamedPipeBinding for your communication then you may get an exception like “There was an error reading from the pipe: Unrecognized error 109 (0x6d).”

How to fix this exception

  1. If you are using netNamedPipeBinding and your service went down while the operation is in progress, you may get this exception. So make sure that your service is up and running.

  2. If you are using Streaming in WCF, and your binding is netNamedPipeBinding, you may get this exception. To fix this exception, make sure that you are not using DataContract to transfer your data. Also make sure that you are not violating any requirement implied by WCF streaming. Streaming has some limitation. If you are using streaming then compare your implementation with the given article. Article How to transfer / Upload / Download huge / large file to and from a WCF service using streaming.

Parquet file experiments, findings and recommendations

Parquet is a binary file format designed with big data in mind where we must access data frequently and efficiently. The way it stores file on the disk is also different from other file formats. It is a column-based data file. And in reality it uses both row based and column based approach to bring the best of both worlds. The data is encoded on disk which ensures that the size remains small compared to actual data and is then compressed where the file is scanned as whole and cut out redundant parts. The query/read speed is dramatically fast when compared to other file formats. Nested data is handled efficiently which is quite cumbersome in other file format to achieve. Doesn’t require to parse the entire file to find data due to its way of storing data. This makes it efficient in reading data. Works quite efficiently with data processing frameworks. Automatically stores schema information. SQL querying is possible with this file format using Continue reading

Libish Varghese Jacob

Libish Varghese JacobI am currently working as a lead engineer in one of the leading wind turbine manufacturing firm. I have wide range of interests and getting my hands dirty in technology is one among them. I use this platform primarily as my knowledge base. I also use this platform to share my experience and experiments so that it might help someone who is walking the way I already did. The suggestions expressed here are the best to my knowledge at the time of writing and this may not necessarily be the best possible solution. I would pretty much appreciate if you could comment on it to bring into my notice on what could have been done better.