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update doc with review comment and add FAQ

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Prabhjyot Singh 2016-05-19 13:34:50 +05:30
parent 5c2bf139ae
commit aeb5a73f61
1 changed files with 17 additions and 3 deletions
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20
docs/interpreter/livy.md
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@ -52,6 +52,7 @@ Additional requirements for the Livy interpreter are:
Basically, you can use
**spark**
```
%livy.spark
sc.version
@ -59,12 +60,14 @@ sc.version
**pyspark**
```
%livy.pyspark
print "1"
```
**sparkR**
```
%livy.sparkr
hello <- function( name ) {
@ -86,8 +89,19 @@ You can leverage [Zeppelin Dynamic Form]({{BASE_PATH}}/manual/dynamicform.html).
print "${group_by=product_id,product_id|product_name|customer_id|store_id}"
```
## Know Issue
If you are getting an error `Blacklisted configuration values in session config: spark.master`
## FAQ
Livy debugging: If you see any of these in error console
> Connect to livyhost:8998 [livyhost/127.0.0.1, livyhost/0:0:0:0:0:0:0:1] failed: Connection refused
Looks like the livy server is not up yet or the config is wrong
> Exception: Session not found, Livy server would have restarted, or lost session.
The session would have timed out, you may need to restart the interpreter.
> Blacklisted configuration values in session config: spark.master
edit `conf/spark-blacklist.conf` file in livy server and comment out `#spark.master` line.