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HBASE-11855 HBase handbook chapter 18.9 out of date (Michael Tauscher)

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stack 2014-09-02 15:25:56 -07:00
parent 842f4808db
commit 767aced0f9
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src/main/docbkx/developer.xml
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@ -1044,17 +1044,22 @@ public class TestHRegionInfo {
<title>Running tests faster</title> <title>Running tests faster</title>
<para> By default, <code>$ mvn test -P runAllTests</code> runs 5 tests in parallel. <para> By default, <code>$ mvn test -P runAllTests</code> runs 5 tests in parallel.
It can be increased on a developer's machine. Allowing that you can have 2 tests It can be increased on a developer's machine. Allowing that you can have 2 tests
in parallel per core, and you need about 2Gb of memory per test (at the in parallel per core, and you need about 2GB of memory per test (at the
extreme), if you have an 8 core, 24Gb box, you can have 16 tests in parallel. extreme), if you have an 8 core, 24GB box, you can have 16 tests in parallel.
but the memory available limits it to 12 (24/2), To run all tests with 12 tests but the memory available limits it to 12 (24/2), To run all tests with 12 tests
in parallel, do this: <command>mvn test -P runAllTests in parallel, do this: <command>mvn test -P runAllTests
-Dsurefire.secondPartThreadCount=12</command>. To increase the speed, you -Dsurefire.secondPartForkCount=12</command>. If using a version earlier than
can as well use a ramdisk. You will need 2Gb of memory to run all tests. You 2.0, do: <command>mvn test -P runAllTests -Dsurefire.secondPartThreadCount=12
will also need to delete the files between two test run. The typical way to </command>. To increase the speed, you can as well use a ramdisk. You will need 2GB
configure a ramdisk on Linux is:</para> of memory to run all tests. You will also need to delete the files between two
test run. The typical way to configure a ramdisk on Linux is:</para>
<screen language="bourne">$ sudo mkdir /ram2G <screen language="bourne">$ sudo mkdir /ram2G
sudo mount -t tmpfs -o size=2048M tmpfs /ram2G</screen> sudo mount -t tmpfs -o size=2048M tmpfs /ram2G</screen>
<para>You can then use it to run all HBase tests with the command: </para> <para>You can then use it to run all HBase tests on 2.0 with the command: </para>
<screen language="bourne">mvn test
-P runAllTests -Dsurefire.secondPartForkCount=12
-Dtest.build.data.basedirectory=/ram2G</screen>
<para>On earlier versions, use: </para>
<screen language="bourne">mvn test <screen language="bourne">mvn test
-P runAllTests -Dsurefire.secondPartThreadCount=12 -P runAllTests -Dsurefire.secondPartThreadCount=12
-Dtest.build.data.basedirectory=/ram2G</screen> -Dtest.build.data.basedirectory=/ram2G</screen>