Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/938#discussion_r139877726
--- Diff:
common/src/main/java/org/apache/drill/common/exceptions/UserException.java ---
@@ -536,6 +542,33 @@ public Builder pushContext(final String name, final
double value) {
* @return user exception
*/
public UserException build(final Logger logger) {
+
+ // To allow for debugging:
+ // A spinner code to make the execution stop here while the file
'/tmp/drillspin' exists
+ // Can be used to attach a debugger, use jstack, etc
+ // The processID of the spinning thread should be in a file like
/tmp/spin4148663301172491613.tmp
+ // along with the error message.
+ File spinFile = new File("/tmp/drillspin");
--- End diff --
Should this be a config setting? Probably the config is not visible here,
but can we set a static variable at start-up time? And, since this code will
check the file system on every exception, should we have a config variable to
turn on the check?
Feel free to tell me I'm being overly paranoid...
---
