[GitHub] [apisix-java-plugin-runner] Cheol-Soon-Choi opened a new issue, #258: request help: failed to receive RPC_HTTP_REQ_CALL: timeout

["Cheol-Soon-Choi (via GitHub)" <gi...@apache.org>]

Cheol-Soon-Choi opened a new issue, #258:
URL: https://github.com/apache/apisix-java-plugin-runner/issues/258

   ### Issue description
   At some point during apisix operation, an error suddenly occurs and the client call does not proceed at all.
   For all client calls, can check the error log as below.
   ```
   phase_func(): failed to receive RPC_HTTP_REQ_CALL: timeout
   ```
   ```
   run_plugin(): ext-plugin-pre-req exits with http status code 503
   ```
   ```
   ERROR 57658 --- [tLoopGroup-34-6] o.a.a.p.r.h.ExceptionCaughtHandler       : handle request error:
   io.netty.channel.StacklessClosedChannelException: null
           at io.netty.channel.AbstractChannel$AbstractUnsafe.write(Object, ChannelPromise)(Unknown Source) ~[netty-transport-4.1.78.Final.jar!/:4.1.78.Final]
   Caused by: io.netty.channel.unix.Errors$NativeIoException: writeAddress(..) failed: Broken pipe
   ```
   
   It was confirmed that the client call resumed normally after 20 to 30 minutes without taking any action.
   
   I'd like to know under what circumstances this problem occurs and prevent it from recurring.
   Is it a linux or apisix or java runner resource issue?
   I wish I could give you some advice on this matter. Thanks in advance.
   
   ### Environment
   linux RAM 8G / java runner cmd option is `'-Xmx2g', '-Xms2g'` / RPS is about 200~600(tends to happen when rps are high, but doesn't always happen)
   * your apisix-java-plugin-runner version 0.4.0
   apisix 3.2.1


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