Hello Team, My team conducting a survey can push data to ODK but during pulling of data we get the error below; " Error: retrieving next chunk of instances from server... NOT ALL SUBMISSIONS RETRIEVED: Error fetching list of submissions: Fetch of submission download chunk failed. Detailed err…

The command-line pull does the same. pulls for a bit then throws an error. attached is the stack trace. cli stack trace.txt (54.2 KB) ▶ ···

Luwum, It sounds like the issue is probably your network connection. I don't know how technical you are, but you could always run Briefcase locally on the server via the command line interface to do the pull and rsync or Dropbox the data to where you need it to go. Yaw ▶ ···

I am fairly technical however i don't know the commands to pull data from the command line. Please share them with me. ▶ ···

Luwum, The CLI interface examples are at https://opendatakit.org/use/briefcase/ Can you confirm that you are running Briefcase on the server that houses the data? That is, you've SSHed into the Centos box, and you are running the Briefcase jar locally on that machine. Yaw ▶ ···

Yes i can confirm this. also the https://domain.ug aggregate url used resolves to localhost (127.0.0.1) ▶ ···

Curious. Next step then is to check the Tomcat and MySQL logs to see if there is a failure at the same time as you see in Briefcase. Yaw ▶ ···

MySQL log shows okay but tomcat log has errors. see dump attached. tomcat tail.txt (38.2 KB) ▶ ···

Just had an idea. Does this happen with just one form or all forms? What if you use a single question form? Yaw ▶ ···

It happens for 3 out of 5 forms configured on ODK. Am thinking these other forms have alot of data associated with them or something. What do you think? ▶ ···

Compare the size of forms (number of nodes) and submissions for the 3 that fail and the 2 that don't. Is there a pattern there? Wherever there is strange behavior on Aggregate, it's almost always related to running out of RAM. Turn on garbage collection logging on Tomcat and see if it correlates…

ODK Forum

ODK timing out during data pull

Support

show post in topic

Home
Categories
Guidelines
Terms of Service
Privacy Policy

Powered by Discourse, best viewed with JavaScript enabled

Looking for a better way? Try ODK Cloud, the official managed hosting service from the creators of ODK.