Adds HADOOP-9955 RPC idle connection closing is extremely inefficient
Then removes queue added by HADOOP-9956 at Enis suggestion
Changes how we do accounting of Connections to match how it is done in Hadoop.
Adds a ConnectionManager class. Adds new configurations for this new class.
"hbase.ipc.client.idlethreshold" 4000
"hbase.ipc.client.connection.idle-scan-interval.ms" 10000
"hbase.ipc.client.connection.maxidletime" 10000
"hbase.ipc.client.kill.max", 10
"hbase.ipc.server.handler.queue.size", 100
The new scheme does away with synchronization that purportedly would freeze out
reads while we were cleaning up stale connections (according to HADOOP-9955)
Also adds in new mechanism for accepting Connections by pulling in as many
as we can at a time adding them to a Queue instead of doing one at a time.
Can help when bursty traffic according to HADOOP-9956. Removes a blocking
while Reader is busy parsing a request. Adds configuration
"hbase.ipc.server.read.connection-queue.size" with default of 100 for
queue size.
- Testing by executing a command will cover the exact path users will trigger, so its better then directly calling library functions in tests. Changing the tests to use @shell.command(:<command>, args) to execute them like it's a command coming from shell.
Norm change:
Commands should print the output user would like to see, but in the end, should also return the relevant value. This way:
- Tests can use returned value to check that functionality works
- Tests can capture stdout to assert particular kind of output user should see.
- We do not print the return value in interactive mode and keep the output clean. See Shell.command() function.
Bugs found due to this change:
- Uncovered bug in major_compact.rb with this approach. It was calling admin.majorCompact() which doesn't exist but our tests didn't catch it since they directly tested admin.major_compact()
- Enabled TestReplicationShell. If it's bad, flaky infra will take care of it.
Change-Id: I5d8af16bf477a79a2f526a5bf11c245b02b7d276
Functions format_simple_command and format_and_return_simple_command are used to print runtimes right now. They are called from within every single command and use Ruby's 'yield' magic. Instead, we can simplify it using 'command_safe' function. Since command_safe wraps all commands, we can simply time before and after we call individual command.
If a command only wants to time a part of its logic, it can set instance variables start_time and end_time accordingly which is far more simpler to understand and work with than 'yield'.
Change-Id: Ibfacf3593175af22fc4f7d80896dd2f6d7c5dde3
Implemented ReplicationQueuesHBaseImpl that tracks WAL offsets and replication queues in an HBase table.
Only wrote the basic tracking methods, have not implemented claimQueue() or HFileRef methods yet.
Wrote a basic unit test for ReplicationQueueHBaseImpl that tests the implemented functions on a single Region Server
Signed-off-by: Elliott Clark <elliott@fb.com>
Signed-off-by: Elliott Clark <eclark@apache.org>
@Before and @After to setup/teardown tables using @Rule to set table name based on testname.
Refactor out copy-pasted code fragments to single function.
(Apekshit)
Change-Id: Ic22e5027cc3952bab5ec30070ed20e98017db65a
- Renaming hbase.rb to hbase_constants.rb because there are two hbase.rb files right now which is confusing.
- Remove omnipresence of formatter object since it is kind of a use-and-throw class. Commands should create
an instance, use it to format the output and discard it.
- Some refactoring
Change-Id: If9ea9873904e0a39d199a6aa10e23864b86a2f09
stack
Sergey Soldatov
Andrew Purtell
tedyu
Apekshit Sharma
Enis Soztutar
Ramkrishna
Stephen Yuan Jiang
Joseph Hwang
Apekshit
Matteo Bertozzi
Ashish Singhi
Lars Hofhansl
Yu Li
Ronan Stokes
Daniel Vimont
Jurriaan Mous
Youngjoon Kim
Sean Mackrory
Mikhail Antonov
Sean Busbey
Ashu Pachauri
Gary Helmling