{"id":10498,"date":"2025-11-03T13:32:44","date_gmt":"2025-11-03T05:32:44","guid":{"rendered":"https:\/\/nj.transwarp.cn:8180\/?p=10498"},"modified":"2025-11-03T14:18:17","modified_gmt":"2025-11-03T06:18:17","slug":"hdfs-%e5%ad%98%e5%82%a8%e5%80%be%e6%96%9c%e8%af%8a%e6%96%ad%e4%bb%a5%e5%8f%8a%e6%94%b9%e8%bf%9b%e6%96%b9%e6%a1%88","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=10498","title":{"rendered":"HDFS \u5b58\u50a8\u503e\u659c\u8bca\u65ad\u4ee5\u53ca\u6539\u8fdb\u65b9\u6848"},"content":{"rendered":"

\u6982\u8981\u63cf\u8ff0<\/h3>\n

TDH \u96c6\u7fa4\u4e2d\u4f1a\u51fa\u73b0\u4e2a\u522b\u8282\u70b9\u6216\u8005\u4e2a\u522b\u78c1\u76d8\u7a7a\u95f4\u4f7f\u7528\u7387\u8fdc\u9ad8\u4e8e\u5176\u4ed6\u8282\u70b9\u7684\u60c5\u51b5\uff0c\u672c\u6587\u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5\uff0c\u63d0\u4f9b\u4e00\u4e9b\u7b80\u5355\u7684\u8bca\u65ad\u548c\u6539\u8fdb\u65b9\u6848\u3002<\/p>\n

\u8be6\u7ec6\u8bf4\u660e<\/h3>\n
    \n
  1. \u8282\u70b9\u4e4b\u95f4\u5b58\u50a8\u5f02\u6784\uff0c\u5355\u8282\u70b9\u78c1\u76d8\u5bb9\u91cf\u76f8\u540c\uff0c\u5355\u8282\u70b9\u78c1\u76d8\u4f7f\u7528\u7387\u8fdc\u9ad8\u4e8e\u5176\u4ed6\u8282\u70b9<\/li>\n
  2. \u5355\u8282\u70b9\u5185\u78c1\u76d8\u5bb9\u91cf\u5f02\u6784\uff0c\u4e0d\u540c\u78c1\u76d8\u95f4used \u5927\u5c0f\u76f8\u540c\uff0c\u4f46\u78c1\u76d8used%\u4f7f\u7528\u7387\u4e0d\u540c\u3002<\/li>\n
  3. \u5355\u8282\u70b9\u5185\u78c1\u76d8\u5bb9\u91cf\u540c\u6784\uff0c\u4f46\u7531\u4e8e\u662f\u540e\u6269\u5bb9\u589e\u52a0\u7684\u78c1\u76d8\uff0c\u4f7f\u7528\u7387\u8fdc\u4f4e\u4e8e\u4ee5\u524d\u7684\u78c1\u76d8<\/li>\n<\/ol>\n

    \u786e\u8ba4\u662f\u54ea\u79cd\u573a\u666f<\/h4>\n

    1\u3001namenode \u4fe1\u606f
    \n\u4f18\u5148\u67e5\u770b 50070 overview \u754c\u9762\uff0c\u6216\u8005\u8bd5\u7528 hdfs dfsadmin -report \u67e5\u770b\u6570\u636e\u5206\u5e03\u60c5\u51b5\uff0c\u53ef\u4ee5\u786e\u8ba4 datanode \u8282\u70b9\u95f4\u7684\u78c1\u76d8\u4f7f\u7528\u7387\uff1b<\/p>\n

    2\u3001 datanode \u4fe1\u606f
    \n\u53ef\u4ee5\u901a\u8fc7 datanode \u754c\u9762\uff0c\u786e\u8ba4\u5404\u8282\u70b9\u7684 used \u60c5\u51b5\uff0c\u4ee5\u53ca Capacity \u5bb9\u91cf\uff1b<\/p>\n

    3\u3001\u67e5\u770b hdfs \u53c2\u6570\uff0cdfs.datanode.du.reserved \u53c2\u6570\uff0c\u8be5\u53c2\u6570\u662f\u672c\u5730\u6570\u636e\u76d8\u6bcf\u5757\u76d8\u9884\u7559\u7684\u7a7a\u95f4\u5927\u5c0f\uff0c\u9ed8\u8ba420%\uff0c\u5355\u4f4d\u662f byte<\/p>\n

    4\u3001\u670d\u52a1\u5668\u4e0a\u68c0\u67e5\u78c1\u76d8\u6570\u91cf\u3001\u78c1\u76d8\u5bb9\u91cf\u5927\u5c0f\uff0c\u786e\u8ba4\u662f\u54ea\u79cd\u573a\u666f\uff1b<\/p>\n

    \u78c1\u76d8\u5f02\u6784<\/h4>\n

    \u5982\u679c\u662f\u78c1\u76d8\u5f02\u6784\u5bfc\u81f4\u7684\u4e0d\u5747\u8861\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u6574\u78c1\u76d8\u5199\u5165\u7b56\u7565\u6765\u89e3\u51b3\uff1b<\/p>\n

    1\u3001\u8f6e\u8be2\u5199\u5165
    \n\u6bd4\u8f83\u5bb9\u6613\u7406\u89e3\uff0c\u4e0d\u5728\u8d58\u8ff0\uff1b<\/p>\n

    2\u3001\u57fa\u4e8e\u53ef\u7528\u7a7a\u95f4\u7684\u7b56\u7565<\/p>\n

    \u5b83\u6839\u636e\u4e00\u4e2a\u53ef\u7528\u7a7a\u95f4\u7684\u9608\u503c\uff0c\u5c06\u5377\u5206\u4e3a\u53ef\u7528\u7a7a\u95f4\u591a\u7684\u5377\u548c\u53ef\u7528\u7a7a\u95f4\u5c11\u7684\u5377\u4e24\u7c7b\u3002\u7136\u540e\uff0c\u4f1a\u6839\u636e\u4e00\u4e2a\u6bd4\u8f83\u9ad8\u7684\u6982\u7387\u9009\u62e9\u53ef\u7528\u7a7a\u95f4\u591a\u7684\u5377\u3002\u4e0d\u7ba1\u9009\u62e9\u4e86\u54ea\u4e00\u7c7b\uff0c\u6700\u7ec8\u90fd\u4f1a\u91c7\u7528\u8f6e\u8be2\u7b56\u7565\u6765\u5199\u5165\u8fd9\u4e00\u7c7b\u5377\u3002\u53ef\u7528\u7a7a\u95f4\u9608\u503c\u548c\u9009\u62e9\u5377\u7684\u6982\u7387\u90fd\u662f\u53ef\u4ee5\u901a\u8fc7\u53c2\u6570\u8bbe\u5b9a\u7684\u3002\u8fd9\u4e2a\u7b56\u7565\u53ef\u4ee5\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u524a\u5f31\u4e0d\u5e73\u8861\u7684\u73b0\u8c61\uff0c\u4f46\u4ecd\u7136\u65e0\u6cd5\u5b8c\u5168\u6d88\u9664\u5176\u5f71\u54cd\u3002\u5e76\u4e14\u5377\u7684\u53ef\u7528\u7a7a\u95f4\u53ea\u662f\u8bf8\u591a\u56e0\u7d20\u4e2d\u7684\u4e00\u4e2a\uff0c\u4ecd\u7136\u4e0d\u591f\u5168\u9762\uff0c\u78c1\u76d8I\/O\u7b49\u6307\u6807\u4e5f\u662f\u6bd4\u8f83\u91cd\u8981\u7684\u3002\u4f46\u4e0d\u7ba1\u5982\u4f55\uff0c\u5b83\u5df2\u7ecf\u6bd4\u7eaf\u8f6e\u8be2\u7b56\u7565\u597d\u5f97\u592a\u591a\u4e86\u3002<\/p>\n

    \u89e3\u51b3\u65b9\u6848<\/h4>\n

    \u573a\u666f1\uff1a
    \n\u8282\u70b9\u95f4\u78c1\u76d8\u4e0d\u5747\u8861\uff0c\u4f18\u5148\u4f7f\u7528 balancer \u8fdb\u884c\u8282\u70b9\u95f4\u5747\u8861\uff1b
    \nkinit -kt \/etc\/hdfs1\/hdfs.keytab hdfs\/$HOSTNAME
    \nhdfs dfsadmin -setBalancerBandwidth 50485760
    \nnohup hdfs balancer -threshold 5 >\/tmp\/balance.log 2>&1 &<\/p>\n

    \u573a\u666f2\uff1a
    \n\u8282\u70b9\u5185\u5404\u78c1\u76d8\u95f4\u4e0d\u5747\u8861\uff0c\u5219\u53ef\u4ee5\u8c03\u6574\u5199\u5165\u7b56\u7565\uff0c\u53ef\u4ee5\u901a\u8fc7\u518dmanager \u9875\u9762\u6dfb\u52a0\u53c2\u6570\u7684\u65b9\u5f0f\u8c03\u6574\uff1b<\/p>\n\n\n\n\n\n\n\n
    \u53c2\u6570\u540d<\/th>\n\u53c2\u6570\u503c<\/th>\n<\/tr>\n<\/thead>\n
    dfs.datanode.fsdataset.volume.choosing.policy<\/td>\norg.apache.hadoop.hdfs.server.datanode.fsdataset.AvailableSpaceVolumeChoosingPolicy<\/td>\n<\/tr>\n
    dfs.datanode.available-space-volume-choosing-policy.balanced-space-threshold<\/td>\n10737418240<\/td>\n<\/tr>\n
    dfs.datanode.available-space-volume-choosing-policy.balanced-space-preference-fraction<\/td>\n0.75f<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    \u53c2\u6570\u4e00\u542b\u4e49\uff1a\u6570\u636e\u526f\u672c\u5b58\u653e\u78c1\u76d8\u7b56\u7565-\u4f18\u5148\u5b58\u653e\u53ef\u7528\u7a7a\u95f4\u591a\u7684\u78c1\u76d8
    \n\u53c2\u6570\u4e8c\u542b\u4e49\uff1adatanode\u8282\u70b9\u6240\u6709\u914d\u7f6e\u7684\u6570\u636e\u78c1\u76d8\u53ef\u7528\u7a7a\u95f4\u6700\u5927\u6700\u5c0f\u503c\u4e4b\u5dee\uff0c\u5982\u679c\u5c0f\u4e8e\u8be5\u53c2\u6570\u503c\uff0c\u537310G\uff0c\u9ed8\u8ba4\u503c\uff0c\u5c31\u91c7\u7528\u8f6e\u8be2\u7684\u65b9\u5f0f\u9009\u62e9\u78c1\u76d8\u5b58\u653e\u3002
    \n\u53c2\u6570\u4e09\u542b\u4e49\uff1a\u6709\u591a\u5c11\u6bd4\u4f8b\u7684\u6570\u636e\u526f\u672c\u5e94\u8be5\u5b58\u50a8\u5230\u5269\u4f59\u7a7a\u95f4\u8db3\u591f\u591a\u7684\u78c1\u76d8\u4e0a\u3002\u8be5\u914d\u7f6e\u9879\u53d6\u503c\u8303\u56f4\u662f0.0-1.0\uff0c\u4e00\u822c\u53d60.5-1.0\uff0c\u9ed8\u8ba4\u503c0.75<\/p>\n

    \u5bf9\u4e8eTDH 9.0 \u4ea7\u54c1\uff0chadoop \u5df2\u7ecf\u5347\u7ea7\u52303.X \u53ef\u4ee5\u5229\u7528hdfs diskbalancer \u6765\u8fdb\u884c\u78c1\u76d8\u95f4\u6570\u636e\u5747\u8861<\/p>\n

    \u573a\u666f\u4e09
    \n\u5355\u8282\u70b9\u78c1\u76d8\u540c\u6784\uff0c\u78c1\u76d8\u4f7f\u7528\u7387\u4e0d\u5747\uff0c\u4e14\u8282\u70b9\u95f4\u4f7f\u7528\u7387\u4e5f\u4e0d\u5747\u8861\u3002
    \n\u89e3\u51b3\uff1a\u53ef\u89e3\u51b3hdfs balancer \u548cAvailableSpaceVolumeChoosingPolicy \u4e00\u8d77\u8c03\u6574\uff0c\u6570\u636ebalancer \u7684\u65f6\u5019\u5c06\u4f18\u5148move\u5230\u7a7a\u95f4\u5269\u4f59\u591a\u7684\u78c1\u76d8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

    \u6982\u8981\u63cf\u8ff0 TDH \u96c6\u7fa4\u4e2d\u4f1a\u51fa\u73b0\u4e2a\u522b\u8282\u70b9\u6216\u8005\u4e2a\u522b\u78c1\u76d8\u7a7a\u95f4\u4f7f\u7528\u7387\u8fdc\u9ad8\u4e8e\u5176\u4ed6\u8282\u70b9\u7684\u60c5\u51b5\uff0c\u672c\u6587\u9488\u5bf9\u8fd9\u79cd\u60c5\u51b5\uff0c\u63d0\u4f9b\u4e00\u4e9b\u7b80 ..<\/p>\n

    <\/div>\n

    Read more<\/a><\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-10498","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/10498","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10498"}],"version-history":[{"count":3,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/10498\/revisions"}],"predecessor-version":[{"id":17597,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/10498\/revisions\/17597"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10498"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10498"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10498"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}