Error communicating with impalad: TSocket read 0 bytes - runtime-error
when i interact with impala i randomly get the error:
Error communicating with impalad: TSocket read 0 bytes.
The error is almost always related to tables that are truncated and repopulated every day.
I've tried refreshing the tables, but that doesn't seem to fix the problem.
Any suggestions?
Many thanks in advance.
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I am trying to decode some buffer data that I have received from a serial port. To me the data seems to make no sense - I am not even sure if I am splitting the messages up correctly. The data comes from a concrete crusher and while the concrete is being crushed we get an almost continuous stream of data. I get about 10 "messages" a second (but this might be multiple messages included in each message) and I am splitting them up by waiting 50 ms after each message. The data looks like this: [0,0,0,224,0,224,0,0,224,0,0,224,0,0,0,0,0,0,0,224,0,0,0,0,224,0,0,0,224,0,224,0,0,224,0,0,0,224,0,0,0,0,0,0,0,224,0,0,0,224,0,0,224,0,0,224,0,224,0,0,224,0,0,0,0,0,0,0,0,224,224,0] [0,0,0,224,0,224,0,0,224,0,0,224,0,0,0,0,0,0,0,224,0,0,0,0,0,0,0,224,0,224,0,0,0,0,0,0,0,0,0,0,0,0,0,224,0,0,0,224,0,0,224,0,0,224,0,0,0,0,224,0,0,0,0,0,0,0,0,224,224,0] [0,0,0,224,0,224,0,0,224,0,0,224,0,0,0,0,0,0,0,224,0,224,0,0,224,0,0,0,224,0,224,224,224,0,0,0,224,0,0,0,0,0,0,0,0,224,0,0,0,224,0,224,224,224,0,0,224,0,0,0,224,0,0,0,224,0,0,0,0,0,224,224,0] as you can see there are no values at all other than 0 and 224... The last message is: [0,0,0,0,0,0,224,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,224,0,0,224,0,0,0,0,0,0,0,0,0,0,0,0,0,0,224,0,0,0,0,224,224,0,0,224,0,0,224,0,0,0,224,0,0,0,0,0,0,0,0,0,0,0,224,0,0,0,0,0,224,0,224,224,0,0,224,0,0,0,224,224,0] the value displayed on the machine was 427.681kN but I can't see any way that this data can produce that. Each message ends with 224,224,0 so I am wondering if that is the split sequence? I am getting this data with node-red and this is the format that I can copy it from the debug panel in. I am very lost so any guidance or directions that I can look in would be much appreciated.
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