[incubator-skywalking] branch scope-refactor updated: Add missing last section of document.

[wu...@apache.org]

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wusheng pushed a commit to branch scope-refactor
in repository https://gitbox.apache.org/repos/asf/incubator-skywalking.git


The following commit(s) were added to refs/heads/scope-refactor by this push:
     new f45a6e0  Add missing last section of document.
f45a6e0 is described below

commit f45a6e0a1dc941645ba77e42b2f0b0e818bfcee8
Author: Wu Sheng <wu...@foxmail.com>
AuthorDate: Mon Feb 25 08:21:35 2019 +0800

    Add missing last section of document.
---
 docs/en/guides/source-extension.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/en/guides/source-extension.md b/docs/en/guides/source-extension.md
index c25e2b8..63cc4ea 100644
--- a/docs/en/guides/source-extension.md
+++ b/docs/en/guides/source-extension.md
@@ -76,6 +76,10 @@ in this Service scope, the id is service id, which is used in [OAL group mechani
 
 6. Add scope name keyword as source in parser definition file, `OALParser.g4`, which is at same fold of `OALLexer.g4`.
 
+7. Set the default columns for new scope, at `generator-scope-meta.yml` file in `generated-analysis/src/main/resources`.
+If you want to understand why need this columns, you have to understand all existing query(s). But there is an easy way, 
+follow other existing scopes. Such as, if you are adding metric, connection number for service instance, follow existing `ServiceInstance`. 
+
 ___
 After you done all of these, you could build a receiver, which do
 1. Get the original data of the metric,