2008 apache软件框架培训.pdfVIP

BookKeeperGettingStartedGuide

1GettingStarted:SettingupBookKeepertowriogs.

ThiscontainsinformationtogetyoustartedquicklywithBookKeeper.Itisaimed

primarilyatdeveloperswillingtotryitout,andcontainssimpleinstallationinstructions

forasimpleBookKeeperinstallationandasimpleprogrammingexample.Forfurther

programmingdetail,pleaserefertoBookKeeperProgrammersGuide.

1.1Pre-requisites

SeeSystemRequirementsintheAdminguide.

1.2Download

BookKeeperisdistributedalongwithZooKeeper.TogetaZooKeeperdistribution,

downloadarecentstablereleasefromoneoftheApacheDownloadMirrors.

1.3LocalBookKeeper

Underorg.apache.bookkeeper.util,youllfindajavaprogramcalledLocalBookKeeper.java

thatsetsyouuptorunBookKeeperonasinglemachine.Thisisfarfromidealfroma

performance,buttheprogramisusefulforbothtestandeducationalpurposes.

1.4Settingupbookies

Ifyoureboldandyouwantmorethanjustrunningthingslocally,thenyoullneedtorun

bookiesindifferentservers.Youllneedatleastthreebookiestostartwith.

Foreachbookie,weneedtoexecuteacommandlikethefollowing:

java-cp.:./zookeeper-version-bookkeeper.jar:./

zookeeper-version.jar:../log4j/apache-log4j-1.2.15/

log4j-1.2.15.jar\-Dlog4j.configuration=perties

to.BookieServer3181/

path_to_log_device/\/path_to_ledger_device/

/path_to_log_device/and/path_to_ledger_device/aredifferentpaths.Also,port3181is

theportthatabookielistensonforconnectionrequestsfroms.

1.5SettingupZooKeeper

ZooKeeperstoresmetadataonbehalfofBookKeepersandbookies.Togetaminimal

ZooKeeperinstallationtoworkwithBookKeeper,wecansetuponeserverrunningin

standalonemode.Oncewehavetheserverrunning,weneedtocreateafewznodes:

1.