Fixed the bug of the result of GC count in query of GC trend service always 0.

Error rate alarm is not triggered

* #1405
Add application id into service metric for the page jump from overview page to service page.

* Fixed test case error.

* Fixed the wrong usage of elasticsearch filter.

* #1393

The array data type of service name column are nested. Change the data type to be just a one-dimensional array.

* #1207

Return true when segment parse throw exception to avoid parse the segment over and over again which read from buffer file.

* no message

* #1202

1. Determine the log is enabled for the DEBUG level before printing message.
2. Make the columns initialize to be static attribute.
3. Topology build optimize: Cache query result to avoid repeating queries.

* #1202

Add elasticsearch batch process setting into application.yml.

* #1202

Fixed check style error.

* #1202

Use XContentFactory to build source to insert into elasticsearch.

* support shardingjdbc database storage feature

* dependency and version should be defined in collector root pom.xml

* update the markdown file

* fix errors

* fix checkstyle errors

* add the Logger modifier "static" in pr #1347

* fix the issue #1376

* #1206

1. Support list data type attribute in streaming data.
2. Support multiple service names in segment duration index.

* Fixed the conflict.

* #1206

Add TODO description to notify linjiaqi.

* #1206

Remove @NotNull

* Add Zipkin receiver

* add the Logger modifier "static" in pr 

* support shardingjdbc database storage feature

* Refactor English documents to guide end users.

Add application id and code into ServiceInfo.

RemoteDataMappingIdNotFoundException caused by remote entity did not registered.
Some remote entities in alarm module did not registered into remote module.

* #1124

Add heart beat time into service name index to filter non-active service name.

* Filter service name by heart beat time when query service name count.

* #1124
1. Add application id to be a query condition of searchService method.
2. Filter service name by given time which calculated by the minute metric TTL setting. ( CurrentTimeStamp - minuteMetricTTL )

* Fixed the auto test failure.

#1124

* sofa rpc integration

* remove unused class and method,add component defination

* only support after sofa rpc 5.4.0

* set sofarpc componentId be 32

* Add document of component library settings and incuating features abstract. (#1185)

* sofa rpc integration

* Update UI licenses (#1189)

* Update UI licenses for beta version

* Update FAQ doc (#1184)

* update faq doc

* update faq

* update faq

* Update readme for beta release. (#1191)

* New english readme.

* New chinese readme.

* Fix #1186 Webapp read timeout config (#1192)

* Updat ui (#1197)

* Change the intercept point of block call way (#1190)

* Change the buired point of block call way

* Support future way and change the operation name of span

* Update screenshot for new release. (#1209)

* remove unused class and method,add component defination

* only support after sofa rpc 5.4.0

* set sofarpc componentId be 32

* sofa rpc integration

* remove unused class and method,add component defination

* only support after sofa rpc 5.4.0

* set sofarpc componentId be 32

* sofa rpc integration

* remove unused class and method,add component defination

* change parent pom version

* remove unused dependency

Block streaming, mandatory persistent cache data to storage then clean the cache data.

* #1263

Separated TTL from minute to minute, hour, day, month.

* 1. Minute metric data ttl change to 90, because of the 1 hour duration condition in UI means 60 minutes.
And i prefer to setting the value up to above 50%.
2. Some description and logging.

#1263

* Add a config time named traceDataTTL for trace data TTL.

#1263

* Fixed the logger english sentence mistake.

* Fixing #1231. Adding order and status to trace query.

* Fixing 1231. Using enum for traceState and queryOrder

* Incorporating code review suggestions

Add folder lock to collector's buffer folder.

* Do not get alarm metric for overview and application topology.

* Delete server and service alarm metric only.

Module class rename to ModuleDefine, Module is the JDK9 class. It is conflict with our Module class. (#1168)

Delete buffer directory when collector restart.

* Rename thermodynamic attributes.

* A missing attribute name.

Segment end time: maximum end time in all span

#1149

* init test

* update

* agent-grpc-test

* part

* fix based on org.apache.skywalking.apm.agent.core.context.trace.AbstractTracingSpan.logs

* Fix Code Bug

* Add Test

* Fix Text

* add SegmentCounterTest