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new 0dec078 Add trouble shooting part for realtime olap tutorial
0dec078 is described below
commit 0dec078695c3d594f9a1be6b5b550bba5400e833
Author: hit-lacus <[email protected]>
AuthorDate: Sun Apr 14 20:02:54 2019 +0800
Add trouble shooting part for realtime olap tutorial
---
website/_docs30/tutorial/real_time_olap.md | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/website/_docs30/tutorial/real_time_olap.md
b/website/_docs30/tutorial/real_time_olap.md
index 21a79db..e1184ef 100644
--- a/website/_docs30/tutorial/real_time_olap.md
+++ b/website/_docs30/tutorial/real_time_olap.md
@@ -7,7 +7,7 @@ permalink: /docs30/tutorial/realtime_olap.html
Kylin v3.0.0 will release the real-time OLAP function, by the power of new
added streaming reciever cluster, Kylin can query streaming data with
sub-second latency. This doc is a step by step tutorial, illustrating how to
create and build a sample streaming cube.
-In this tutorial, we will use Hortonworks HDP 2.2.4 Sandbox VM + Kafka
v1.0.2(Scala 2.11) as the environment.
+In this tutorial, we will use Hortonworks HDP-2.4.0.0.169 Sandbox VM + Kafka
v1.0.2(Scala 2.11) as the environment.
1. Basic concept
2. Prepare environment
@@ -15,6 +15,8 @@ In this tutorial, we will use Hortonworks HDP 2.2.4 Sandbox
VM + Kafka v1.0.2(Sc
4. Start consumption
5. Monitor receiver
+The configuration can be found at [Real-time OLAP
configuration](http://kylin.apache.org/docs30/install/configuration.html#realtime-olap).
+
----
## Basic Concept
@@ -107,7 +109,7 @@ python user_action.py --max-uid 2000 --max-vid 2000
--msg-sec 100 --enable-hour-
This tool will send 100 records to Kafka every second. Please keep it running
during this tutorial. You can check the sample message with
kafka-console-consumer.sh now.
### Start Kylin Process
-The kylin process will work as coordinator of the receiver cluster.
+The kylin process will work as coordinator of the receiver cluster. 7070 is
the default port for coordinator.
{% highlight Groff markup %}
cd /usr/local/apache-kylin-3.0.0-SNAPSHOT-bin-master
export KYLIN_HOME=`pwd`
@@ -115,7 +117,7 @@ sh bin/kylin.sh start
{% endhighlight %}
### Start Receiver Process
-The receiver process will work as worker of the receiver cluster.
+The receiver process will work as worker of the receiver cluster. 9090 is the
default port for receiver.
{% highlight Groff markup %}
cd ../apache-kylin-3.0.0-SNAPSHOT-bin-receiver/
export KYLIN_HOME=`pwd`
@@ -230,4 +232,11 @@ When the mouse pointer moves over the segment icon, the
segment level statistics
When the mouse pointer moves over the segment icon, the partition level
statistics will be displayed.
-
\ No newline at end of file
+
+
+## Trouble shooting
+
+- Please make sure that the port 7070 and 9090 is not occupied. If you have to
change port, please do this set `kylin.stream.node` in `kylin.properties` for
receiver or coordinator separately.
+- If you find you have messed up and want to clean up, please remove streaming
metadata in Zookeeper.
+This can be done by executing `rmr PATH_TO_DELETE` in `zookeeper-client`
shell. By default, the root dir of streaming metadata is under
`kylin.env.zookeeper-base-path` + `kylin.metadata.url` + `/stream`.
+For example, if you set `kylin.env.zookeeper-base-path` to `/kylin`， set
`kylin.metadata.url` to `kylin_metadata@hbase`, you should delete path
`/kylin/kylin_metadata/stream`.
\ No newline at end of file
