nkeywal created HBASE-7839:
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Summary: Add a script to simulate a dead machine during the
integration tests
Key: HBASE-7839
URL: https://issues.apache.org/jira/browse/HBASE-7839
Project: HBase
Issue Type: New Feature
Components: test
Affects Versions: 0.96.0
Reporter: nkeywal
Assignee: nkeywal
Priority: Minor
Fix For: 0.96.0
A kill -9 cannot be used to simulate a dead box. With a kill -9:
1) the sockets are closed by the OS
2) the next calls will get immediately a connection refused.
Physically unplugging the cable does work.
To automate this, the best solution seems to be using a firewall config.
It's a little bit complicated however, because we need to refuse the incoming
packets. If we block the out connection, it's detected by the OS and there is
no wait on the socket.
Moreover you need to be root, or use a program with a sticky bit to launch the
script that changes the firewall config.
This will be usable from the integration tests.
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