锘??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#19968;&#21306;&#20108;&#21306;&#19977;&#27431;&#32654;&#44;&#22812;&#22812;&#31934;&#21697;&#35270;&#39057;&#19968;&#21306;&#20108;&#21306;&#44;&#27431;&#32654;&#26085;&#38889;&#23707;&#22269;</title><link>http://www.shnenglu.com/whspecial/category/20716.html</link><description /><language>zh-cn</language><lastBuildDate>Wed, 23 Oct 2013 17:06:58 GMT</lastBuildDate><pubDate>Wed, 23 Oct 2013 17:06:58 GMT</pubDate><ttl>60</ttl><item><title>KFS浠ｇ爜鍒嗘瀽2錛坢eta鍏冩暟鎹寔涔呭寲錛?/title><link>http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html</link><dc:creator>whspecial</dc:creator><author>whspecial</author><pubDate>Wed, 23 Oct 2013 17:03:00 GMT</pubDate><guid>http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html</guid><wfw:comment>http://www.shnenglu.com/whspecial/comments/203894.html</wfw:comment><comments>http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/whspecial/comments/commentRss/203894.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/whspecial/services/trackbacks/203894.html</trackback:ping><description><![CDATA[<p style="line-height:150%"><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">KFS</span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">鐨勫厓鏁版嵁鎸佷箙鍖栨槸渚濊禆checkpoint鍜宱peration log緇撳悎鏉ュ伐浣滅殑錛屽叾涓璫heckpoint欏懼悕鎬濅箟淇濆瓨鐨勬槸鏌愪釜鐐瑰唴瀛樼殑鐘舵�侊紝operation log璁板綍鐨勬槸瀵瑰厓鏁版嵁淇敼鐨勬搷浣滄棩蹇椼�?/span></p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">浣跨敤</span><span style="font-size:12.0pt;">checkpoint+log</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鐨勮璁?br /></span><span style="font-weight: normal;"><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp; </span></span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">鍏冩暟鎹俊鎭繀欏昏鎸佷箙鍖栵紝鍚﹀垯鎺夌數(shù)鎴栬�呬漢宸ラ噸鍚箣鍚庤淇℃伅涓㈠け<br /></span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp; </span></span><span style="font-size: 9pt; line-height: 150%; font-family: 瀹嬩綋;">渚夸簬蹇�熼噸鍚紝鍙互浠庢渶榪戠殑涓�涓猚p涓揩閫熸瀯寤哄唴瀛樼姸鎬侊紝鍔犱笂璇p涔嬪悗鐨刲og灝卞彲浠ュ畬鏁村湴鏋勫緩鍐呭瓨<br /><br /></span></span></h1>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">璇誨啓</span><span style="font-size:12.0pt;">checkpoint</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鍜?/span><span style="font-size:12.0pt;">log</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鐨勮繃紼?br /><br /></span><strong style="line-height: 150%; font-size: 14px;">Metaserver</strong><strong style="line-height: 150%; font-size: 14px;"><span style="font-family:瀹嬩綋;">鍚姩鏃剁殑鍐呭瓨鏋勫緩錛?/span></strong></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鍦?/span>Startup.cc<span style="font-family:瀹嬩綋;">璋冪敤</span>rebuild<span style="font-family:瀹嬩綋;">鍑芥暟</span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">濡傛灉涔嬪墠宸茬粡鏈変簡(jiǎn)</span>checkpoint<span style="font-family:瀹嬩綋;">錛屼粠</span>checkpoint<span style="font-family:瀹嬩綋;">閲岄噸寤哄唴瀛樻爲(wèi)錛屽惁鍒欐柊寤轟竴媯靛唴瀛樻爲(wèi)</span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">鍦ㄥ唴瀛樹腑</span>replay<span style="font-family:瀹嬩綋;">璇?/span>checkpoint<span style="font-family:瀹嬩綋;">涔嬪悗鐨勬墍鏈?/span>operation log<br /><br /></p>  <p style="line-height:150%"><strong>MetaServer</strong><strong><span style="font-family:瀹嬩綋;">榪愯鏃跺啓鍏ユ柊鐨?/span>checkpoint</strong><strong><span style="font-family:瀹嬩綋;">錛?br /></span></strong></p>  <p style="line-height:150%">logcompactor_main.cc<span style="font-family:瀹嬩綋;">鐨?/span>main<span style="font-family:瀹嬩綋;">鍑芥暟璋冪敤錛屽簲璇ユ槸浠ヨ皟鐢ㄥ彟涓�涓繘紼嬬殑鏂瑰紡鏉ユ墽琛岋紝鐚滄兂鏄?/span>Metaserver<span style="font-family:瀹嬩綋;">榪涚▼浼?xì)瀹氭椂璋冪敤璇q涚▼</span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">鏍規(guī)嵁鏃х殑</span>checkpoint<span style="font-family:瀹嬩綋;">鍦ㄥ唴瀛樹腑鐢熸垚鐘舵�?/span></p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">鍦ㄥ唴瀛樹腑</span>replay<span style="font-family:瀹嬩綋;">涔嬪悗鐨?/span>op log</p>  <p style="margin-left:36.0pt;text-indent:-36.0pt;line-height:150%;">錛?錛?span style="font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; </span><span style="font-family:瀹嬩綋;">灝嗘鏃剁殑鍐呭瓨鐘舵�佸啓鍏ユ柊鐨?/span>checkpoint<br /><br /></p>  <p style="line-height:150%"><strong>MetaServer</strong><strong><span style="font-family:瀹嬩綋;">榪愯鏃跺啓鍏ユ柊鐨?/span>log</strong><strong><span style="font-family:瀹嬩綋;">錛?/span></strong></p>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鐢?/span>logger.cc<span style="font-family:瀹嬩綋;">鏉ュ啓鍏ユ柊</span>log<span style="font-family:瀹嬩綋;">錛岀湅浜?jiǎn)浠ｇ爜搴旇鏄瘡娆′慨鏀逛簡(jiǎn)鍏冧俊鎭殑鎿嶄綔锛岄兘浼?xì)灝嗚繖鏉?/span>op log<span style="font-family:瀹嬩綋;">鍐欏叆紓佺洏錛岃櫧鐒舵�ц兘涓嶉珮錛屼絾鏄瘮杈冨彲闈狅紙涔嬪墠涔熻嚜宸卞啓榪囨棩蹇楀簱錛屼嬌鐢ㄧ殑鏄袱涓?/span>buffer<span style="font-family:瀹嬩綋;">浜ゆ崲鍐欏叆錛岃繖鏍鋒瘮杈冮珮鏁堜竴浜涳級(jí)</span></p><img src ="http://www.shnenglu.com/whspecial/aggbug/203894.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/whspecial/" target="_blank">whspecial</a> 2013-10-24 01:03 <a href="http://www.shnenglu.com/whspecial/archive/2013/10/24/203894.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item><item><title>KFS浠ｇ爜鍒嗘瀽1錛坢eta鍐呭瓨緇撴瀯錛?/title><link>http://www.shnenglu.com/whspecial/archive/2013/10/23/203879.html</link><dc:creator>whspecial</dc:creator><author>whspecial</author><pubDate>Tue, 22 Oct 2013 17:36:00 GMT</pubDate><guid>http://www.shnenglu.com/whspecial/archive/2013/10/23/203879.html</guid><wfw:comment>http://www.shnenglu.com/whspecial/comments/203879.html</wfw:comment><comments>http://www.shnenglu.com/whspecial/archive/2013/10/23/203879.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.shnenglu.com/whspecial/comments/commentRss/203879.html</wfw:commentRss><trackback:ping>http://www.shnenglu.com/whspecial/services/trackbacks/203879.html</trackback:ping><description><![CDATA[<p><span style="font-family: Verdana; font-size: 10pt;">姝ゅ鐨凨FS鏄寚</span><span style="font-family: Verdana; font-size: 10pt; line-height: 18px; background-color: #ffffff;">Kosmos distributed file system錛屼唬鐮佷綅浜?/span><span style="font-family: Verdana; font-size: 10pt;"><a >http://sourceforge.net/projects/kosmosfs/</a>錛屼箣鍚庝細(xì)鍐欏嚑綃囩浉鍏崇殑鏂囩珷錛屼互渚涘悗鏉ヨ�呭弬鑰冦�?/span><span style="font-family: Verdana; font-size: 10pt;"><br /></span><span style="font-family: 瀹嬩綋;"><br />KFS閲孧eta鐨勫唴瀛樼粨鏋勪富瑕佹槸涓�媯礏+鏍?wèi)锛屼繚瀛樺湪鍐呭瓨閲屽Q屽叿浣撳垎鏋愬涓嬶細(xì)</span></p>  <h1><span style="font-size:12.0pt;">B-</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍?wèi)锛?/span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍?wèi)鐨勫畾涔?/span></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鍏充簬榪欎簺鏍?wèi)鐨勫畾涔夊Q屾渶濂借繕鏄弬鑰冪畻娉曞璁虹瓑緇忓吀涔︼紝緗戣礬涓婄殑淇℃伅鏈変簺涓嶆槸寰堝噯紜紝涓轟簡(jiǎn)鏂逛究澶у榪樻槸璐翠竴涓摼鎺ワ細(xì)</span></p>  <p style="line-height:150%"><a >http://www.cnblogs.com/oldhorse/archive/2009/11/16/1604009.html</a></p>  <h1><span style="font-size:12.0pt;">KFS</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">涓轟綍閫夌敤</span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍?wèi)鑰岄潪</span><span style="font-size:12.0pt;">B</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍?wèi)锛?/span></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">榪欐槸鎴戜釜浜虹殑鐞嗚В錛?/span></p>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">铏界劧</span>B<span style="font-family:瀹嬩綋;">鏍?wèi)鍙互鍦ㄩ潪鍙跺瓙鑺傜偣鍛戒腑锛屼細(xì)缇冪煭涓�浜涘鉤鍧囨煡鎵鵑暱搴︼紝浣嗘槸</span>B+<span style="font-family:瀹嬩綋;">鏍?wèi)鍦q欑搴旂敤涓�涓紭鍔垮氨鏄瘡涓妭鐐歸兘鏈夋寚鍚?/span>next<span style="font-family:瀹嬩綋;">鑺傜偣鐨勬寚閽堬紝瀵逛簬鑼冨洿鏌ヨ鎴栬�呴亶鍘嗘搷浣滃緢閫傚悎銆傚浜庢枃浠剁郴緇熺殑涓�涓?/span>ls<span style="font-family:瀹嬩綋;">鏌愪釜瀛愮洰褰曠殑闇�姹傦紝鐢?/span>B+<span style="font-family:瀹嬩綋;">鏍?wèi)鍙互杈冮珮鏁堢殑瑙ｅ啛雬?/span></p>  <h1><span style="font-size:12.0pt;">KFS</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">閲?/span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt; font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍?wèi)鐨劸c誨浘<br /></span></h1><p style="line-height: 150%;"><span style="font-size: 11.0pt;line-height:150%"><img src="http://www.shnenglu.com/images/cppblog_com/whspecial/image1.png" width="480" height="184" alt="" /><br />MetaNode</span><span style="font-size:11.0pt;line-height:150%;font-family: 瀹嬩綋;">錛?/span>base class for both internal and leaf nodes</p>  <p style="line-height:150%"><span style="font-size: 11.0pt;line-height:150%">Meta</span><span style="font-size:11.0pt;line-height:150%;font-family: 瀹嬩綋;">錛?/span>base class for data objects (leaf nodes)</p>  <p style="line-height:150%">Node<span style="font-family:瀹嬩綋;">錛?/span>an internal node in the KFS search tree</p>  <p style="line-height:150%">MetaChunkInfo<span style="font-family:瀹嬩綋;">錛?/span>chunk information for a given file offset </p>  <p style="line-height:150%">MetaDentry <span style="font-family:瀹嬩綋;">錛?/span>Directory entry, mapping a file name to a file id</p>  <p style="line-height:150%">MetaFattr<span style="font-family:瀹嬩綋;">錛?/span>File or directory attributes</p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鍚勮妭鐐圭殑浠嬬粛<br /></span></h1>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>1</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>Meta</strong><span style="font-family:瀹嬩綋;">綾繪槸瀛愯妭鐐圭殑鐖剁被錛屽叾鏈�涓昏鐨勬垚鍛樺彉閲忔槸</span>fid<br /></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鏈変笁涓彾瀛愯妭鐐癸細(xì)</span>MetaChunkInfo<span style="font-family:瀹嬩綋;">錛?/span>MetaDentry<span style="font-family:瀹嬩綋;">錛?/span>MetaFattr<br /><br /></p>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>2</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>MetaDentry</strong><strong><span style="font-family:瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">瀹炵幇浠庢枃浠跺悕鍒?/span>fid<span style="font-family:瀹嬩綋;">鐨勬槧灝勶紝瀵逛簬姣忎釜鏂囦歡錛堢洰褰曪級(jí)閮芥嫢鏈?/span>1<span style="font-family:瀹嬩綋;">涓?/span>MetaDentry</p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">dir<span style="font-family:瀹嬩綋;">錛氭枃浠剁埗鐩綍鐨?/span>fid</p>  <p style="line-height:150%">name<span style="font-family:瀹嬩綋;">錛?/span>dentry<span style="font-family:瀹嬩綋;">鐨勫悕縐幫紝瀹為檯灝辨槸鏂囦歡鍚?br /><br /></span></p>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>3</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>MetaFattr</strong><strong><span style="font-family: 瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">瀹炵幇浠?/span>fid<span style="font-family:瀹嬩綋;">鍒版枃浠跺睘鎬х殑鏄犲皠錛屽浜庢瘡涓枃浠訛紙鐩綍錛夐兘鎷ユ湁涓�涓?/span>MetaFattr<span style="font-family:瀹嬩綋;">銆?br /></span></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">Type<span style="font-family:瀹嬩綋;">錛氭枃浠惰繕鏄洰褰?/span></p>  <p style="line-height:150%">numReplicas<span style="font-family:瀹嬩綋;">錛氭枃浠舵湁鍑犱喚鍓湰</span></p>  <p style="line-height:150%">mtime<span style="font-family:瀹嬩綋;">錛氫慨鏀規(guī)椂闂?/span></p>  <p style="line-height:150%">ctime<span style="font-family:瀹嬩綋;">錛氬睘鎬т慨鏀規(guī)椂闂?/span></p>  <p style="line-height:150%">crtime<span style="font-family:瀹嬩綋;">錛氭枃浠跺垱寤烘椂闂?/span></p>  <p style="line-height:150%">chunkcount<span style="font-family:瀹嬩綋;">錛氳繛緇殑</span>chunk<span style="font-family:瀹嬩綋;">鏁扮洰</span></p>  <p style="line-height:150%">filesize<span style="font-family:瀹嬩綋;">錛氭枃浠跺ぇ灝?/span></p>  <p style="line-height:150%">nextChunkOffset<span style="font-family:瀹嬩綋;">錛氭渶鍚庝竴涓?/span>chunk<span style="font-family:瀹嬩綋;">鍦ㄦ枃浠剁殑鎵�澶勭殑</span>offset</p>  <p style="line-height:150%">mode_t mode<span style="font-family:瀹嬩綋;">錛氭枃浠跺睘鎬э紙</span>rwx<span style="font-family:瀹嬩綋;">浣嶏級(jí)</span></p>  <p style="line-height:150%">key<span style="font-family:瀹嬩綋;">錛氱敱</span>KFS_FATTR<span style="font-family:瀹嬩綋;">錛?/span>fid<span style="font-family:瀹嬩綋;">鏉ユ瀯鎴愶紝鍙互閫氳繃</span>fid<span style="font-family:瀹嬩綋;">鐩存帴鎵懼埌淇濆瓨鏂囦歡灞炴�х殑鑺傜偣銆?br /></span><br /> <strong><span style="font-family:瀹嬩綋;">錛?/span>4</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>MetaChunkInfo</strong><strong><span style="font-family: 瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">鏍囧織鏌愪釜鏂囦歡瀵瑰簲鐨?/span>chunk<span style="font-family:瀹嬩綋;">淇℃伅錛屽鏋滀竴涓枃浠跺寘鍚涓?/span>chunk<span style="font-family:瀹嬩綋;">錛岄偅涔堥渶瑕佹湁澶氫釜</span>MetaChunkInfo<span style="font-family:瀹嬩綋;">銆?br /></span></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">offset<span style="font-family:瀹嬩綋;">錛?/span>chunk<span style="font-family:瀹嬩綋;">鍦ㄦ枃浠朵腑鐨勫亸縐婚噺錛屽洜涓轟竴涓枃浠跺彲鑳界敱澶氫釜</span>chunk<span style="font-family:瀹嬩綋;">緇勬垚</span></p>  <p style="line-height:150%">chunkId<span style="font-family:瀹嬩綋;">錛?/span>chunk<span style="font-family:瀹嬩綋;">鐨?/span>id<span style="font-family:瀹嬩綋;">鍙?/span></p>  <p style="line-height:150%">chunkVersion<span style="font-family:瀹嬩綋;">錛?/span>chunk<span style="font-family:瀹嬩綋;">鐨?/span>version<span style="font-family:瀹嬩綋;">鍊?br /><br /></span></p>  <p style="line-height:150%"><strong><span style="font-family:瀹嬩綋;">錛?/span>5</strong><strong><span style="font-family:瀹嬩綋;">錛?/span>Node</strong><strong><span style="font-family: 瀹嬩綋;">錛?/span></strong><span style="font-family:瀹嬩綋;">瀹炵幇鐨勬槸</span>B+<span style="font-family:瀹嬩綋;">鏍?wèi)鐨勫唴閮ㄨ妭鐐瑰Q岃繖縐嶈妭鐐逛粎浠呬綔涓虹儲(chǔ)寮曠敤閫旓紝瀛樺偍瀹為檯鍏冩暟鎹俊鎭殑鑺傜偣浣嶄簬鏈�搴曢儴鐨勫彾瀛愯妭鐐廣�?br /></span></p><p style="line-height:150%"><span style="font-family:瀹嬩綋;">鎴愬憳鍙橀噺鍖呮嫭錛?/span></p>  <p style="line-height:150%">NKEY = 32<span style="font-family:瀹嬩綋;">錛氭瘡涓妭鐐規(guī)渶澶氭嫢鏈夌殑鍏抽敭瀛楁暟鐩紝瀹為檯涓婁篃灝辨槸鏈�澶氭嫢鏈夌殑瀛愯妭鐐規(guī)暟鐩紝濡傛灉澶氫綑榪欎釜鍊艱妭鐐硅繘琛屽垎瑁?/span></p>  <p style="line-height:150%">NSPLIT = NKEY / 2<span style="font-family:瀹嬩綋;">錛氬垎瑁備箣鍚庢瘡涓妭鐐圭殑鍏抽敭瀛楁暟鐩?/span></p>  <p style="line-height:150%">NFEWEST = NKEY - NSPLIT<span style="font-family:瀹嬩綋;">錛氭瘡涓妭鐐規(guī)渶灝戞嫢鏈夌殑鍏抽敭瀛楁暟鐩紝濡傛灉灝戜簬榪欎釜鍊間袱涓妭鐐硅繘琛屽悎騫?/span></p>  <p style="line-height:150%">count<span style="font-family:瀹嬩綋;">錛氳妭鐐瑰疄闄呮嫢鏈夌殑鍏抽敭瀛楁暟鐩?/span></p>  <p style="line-height:150%">Key childKey[NKEY]<span style="font-family:瀹嬩綋;">錛氳妭鐐瑰瓨鍌ㄧ殑鍏抽敭瀛楀垪琛?/span></p>  <p style="line-height:150%">MetaNode *childNode[NKEY]<span style="font-family:瀹嬩綋;">錛氳妭鐐規(guī)寚鍚戝瓙鑺傜偣鐨勬寚閽堝垪琛?/span></p>  <p style="line-height:150%">Node *next<span style="font-family:瀹嬩綋;">錛氭寚鍚戜笅涓�涓悓綰ц妭鐐圭殑鎸囬拡</span></p>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">瀹為檯涓婃瘡涓唴閮ㄨ妭鐐圭殑闃舵暟涓?/span>32<span style="font-family:瀹嬩綋;">錛屽彲浠ユ湁</span>32<span style="font-family:瀹嬩綋;">涓瓙鑺傜偣錛岃�屾瘡涓彾瀛愯妭鐐瑰彧淇濆瓨涓�涓?/span>key<span style="font-family:瀹嬩綋;">鍊箋�?/span></p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">涓夌被瀛愯妭鐐瑰湪</span><span style="font-size:12.0pt;">B+</span><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">鏍?wèi)涓浣曞垎甯冨Q?/span></h1>  <p style="line-height:150%"><span style="font-family:瀹嬩綋;">鍙互鎯寵薄錛屽繀瀹氭槸灝嗗悓涓�綾葷殑鑺傜偣鑱氶泦鍦ㄤ竴璧楓�傚洜姝ゅ浜庢帓搴忓嚱鏁板氨鏄厛姣旇緝鑺傜偣綾誨瀷錛岀劧鍚庡啀瀵硅妭鐐瑰唴閮ㄧ殑鎴愬憳鍙橀噺榪涜姣旇緝銆?/span>MetaDentry<span style="font-family:瀹嬩綋;">鏄牴鎹?/span>dir<span style="font-family:瀹嬩綋;">錛堢埗鐩綍鐨?/span>id<span style="font-family:瀹嬩綋;">錛夛紝</span>MetaFattr<span style="font-family:瀹嬩綋;">鏄牴鎹?/span>fid<span style="font-family:瀹嬩綋;">錛?/span>MetaChunkInfo<span style="font-family:瀹嬩綋;">鏄牴鎹?/span>id<span style="font-family:瀹嬩綋;">鍜?/span>chunkId<span style="font-family:瀹嬩綋;">鏉ユ帓搴忋�?/span></p>  <h1><span style="font-size:12.0pt;font-family:瀹嬩綋;Times New Roman&quot;;Times New Roman&quot;">涓�涓笉澶浉鍏崇殑鎬濊�?/span></h1>  <p style="line-height:150%"><span style="font-size: 10pt; line-height: 150%; font-family: 瀹嬩綋;">鐪嬩笂闈㈢殑涓夌被瀛愯妭鐐癸紝鎴戜滑鍙互鍙戠幇chunk鐨勪綅緗俊鎭茍娌℃湁淇濆瓨鍦˙+鏍?wèi)閲屽Q屽畠鏄崟鐙繚瀛樺湪涓�涓狹ap鏁版嵁緇撴瀯閲岀殑錛屼篃涓嶄細(xì)鍦╩eta server閲岃繘琛屾寔涔呭寲錛岃�屾槸姣忔chunk鍚姩鏃跺悜meta server鏉ユ姤鍛娿�備箣鎵�浠ヤ笉鍋氭寔涔呭寲錛屽彲浠ヨ繖鏍鋒潵鐞嗚В錛?/span></p>  <p style="line-height:150%"><span style="font-size: 10pt; line-height: 150%; font-family: 瀹嬩綋;">鍙湁Chunk鏈嶅姟鍣ㄦ墠鑳芥渶緇堢‘瀹氫竴涓狢hunk鏄惁鍦ㄥ畠鐨勭‖鐩樹笂銆侰hunk鏈嶅姟鍣ㄧ殑閿欒鍙兘浼?xì)瀵艰嚧Chunk鑷姩娑堝け(姣斿錛岀‖鐩樻崯鍧忎簡(jiǎn)鎴栬�呮棤娉曡闂簡(jiǎn))錛屼害鎴栬�呮搷浣滀漢鍛樺彲鑳戒細(xì)閲嶅懡鍚嶄竴涓狢hunk鏈嶅姟鍣紝榪樻槸鐢眂hunk server鏉ユ姤鍛婃瘮杈冮潬璋便�?/span></p><img src ="http://www.shnenglu.com/whspecial/aggbug/203879.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.shnenglu.com/whspecial/" target="_blank">whspecial</a> 2013-10-23 01:36 <a href="http://www.shnenglu.com/whspecial/archive/2013/10/23/203879.html#Feedback" target="_blank" style="text-decoration:none;">鍙戣〃璇勮</a></div>]]></description></item></channel></rss>                                                                                                                        <footer>
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