Log visualisation
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Key: ZOOKEEPER-773
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-773
Project: Zookeeper
Issue Type: Improvement
Components: contrib
Reporter: Ivan Kelly
Assignee: Ivan Kelly
Priority: Minor
Zkgraph is a log viewer for zookeeper. It can handle transaction logs and
message logs. There are currently two view.
a) Server view
The server view shows the interactions between the different servers in an
ensemble. The X axis represents time.
* Exceptions show up as red dots. Hovering your mouse over them will
give you more details of the exception
* The colour of the line represents the election state of the server.
- orange means LOOKING for leader
- dark green means the server is the leader
- light green means the server is following a leader
- yellow means there isn't enough information to determine the state
of the server.
* The gray arrows denote election messages between servers. Pink dashed
arrows are messages that were sent but never delivered.
b) Session view
The session view shows the lifetime of sessions on a server. Use the time
filter to narrow down the view. Any more than about 2000 events will take a
long time to view in your browser.
The Y axis represents time in this case. Each line is a session. The
black dots represent events on the session. You can click on the black dots for
more details of the event.
2 - Compiling & Running
Run "ant jar" in src/contrib/zkgraph/. This will download all dependencies and
compile all the zkgraph code.
Once compilation has finished, you can run it the the zkgraph.sh script in
src/contrib/zkgraph/bin. This will start and embedded web server on you
machine. Navigate to http://localhost:8182/graph/main.html.
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