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[ZEPPELIN-1488] JDBC Interpreter throws error while the interpreter is downloading dependencies #1467

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ghost wants to merge 4 commits into from
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[ZEPPELIN-1488] JDBC Interpreter throws error while the interpreter is downloading dependencies #1467

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4f7b938
code fix for ZEPPELIN-1488
raja-imaginea Sep 27, 2016
c412dd6
review fix
raja-imaginea Oct 10, 2016
ee98a84
checkstyle fix
raja-imaginea Oct 14, 2016
b069328
removed unnecessary method call
raja-imaginea Oct 18, 2016
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7 changes: 5 additions & 2 deletions zeppelin-zengine/src/main/java/org/apache/zeppelin/notebook/Paragraph.java
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Original file line number Diff line number Diff line change
Expand Up @@ -289,9 +289,12 @@ protected Object jobRun() throws Throwable {
logger.error("Can not find interpreter name " + repl);
throw new RuntimeException("Can not find interpreter for " + getRequiredReplName());
}

InterpreterSetting intp = getInterpreterSettingById(repl.getInterpreterGroup().getId());
while (intp.getStatus().equals(
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@jongyoul jongyoul Oct 4, 2016

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Oh.. my... Github's new review system is weird. Sorry for confusing you. My question is at this point. this loop execute too often. If an interpreter is under the downloading progress, it will take a long time, usually. I think we need to change this loop to run slowly. How do you think?

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@ghost ghost Oct 4, 2016

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Even i was thinking about the same while making this changes. Do you think we should have a thread that should execute this function for every 'n' milliseconds. Should 1000 milliseconds be good enough ?

Any thoughts would also be great

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@jongyoul jongyoul Oct 4, 2016

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Yes, I think it's enough to sleep for a while.

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@ghost ghost Oct 10, 2016

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Please do check now

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@ghost ghost Oct 17, 2016

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@jongyoul : Will changes be good enough now ?

org.apache.zeppelin.interpreter.InterpreterSetting.Status.DOWNLOADING_DEPENDENCIES)) {
Thread.sleep(200);
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@jongyoul jongyoul Oct 17, 2016

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I think it's not perfect but realistic solution for it.

}
if (this.noteHasUser() && this.noteHasInterpreters()) {
InterpreterSetting intp = getInterpreterSettingById(repl.getInterpreterGroup().getId());
if (intp != null &&
interpreterHasUser(intp) &&
isUserAuthorizedToAccessInterpreter(intp.getOption()) == false) {
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