{"id":18315,"date":"2026-05-29T18:06:24","date_gmt":"2026-05-29T10:06:24","guid":{"rendered":"https:\/\/kbwp.transwarp.cn\/?p=18315"},"modified":"2026-05-29T18:06:24","modified_gmt":"2026-05-29T10:06:24","slug":"hdfs-%e7%9a%84-non-dfs-used-%e8%af%b4%e6%98%8e","status":"publish","type":"post","link":"https:\/\/kbwp.transwarp.cn\/?p=18315","title":{"rendered":"hdfs \u7684 Non dfs used  \u8bf4\u660e"},"content":{"rendered":"<h3>\u6982\u8981\u63cf\u8ff0<\/h3>\n<hr \/>\n<p>\u5728 HDFS \u4e2d\uff0cNameNode Web UI (50070\u9875\u9762)\u6216   hdfs dfsadmin -report   \u4f1a\u663e\u793a\u90e8\u5206 DataNode \u5b58\u5728\u201cNon DFS Used\u201d\u7a7a\u95f4\uff0c\u5bfc\u81f4\u603b\u4f53\u53ef\u7528\u5bb9\u91cf\u4f4e\u4e8e\u9884\u671f\u3002\u8be5\u6307\u6807\u53cd\u6620\u7684\u662f DataNode \u672c\u5730\u78c1\u76d8\u4e0a\u5df2\u88ab\u975e HDFS \u6570\u636e\uff08\u5982\u64cd\u4f5c\u7cfb\u7edf\u3001YARN \u65e5\u5fd7\u3001\u5176\u4ed6\u670d\u52a1\u4e34\u65f6\u6570\u636e\u7b49\uff09\u5360\u7528\u7684\u7a7a\u95f4\uff0c\u4f46\u5176\u5b9e\u9645\u8ba1\u7b97\u903b\u8f91\u4e0e\u7cfb\u7edf df \u5c55\u793a\u7684\u78c1\u76d8\u4f7f\u7528\u91cf\u5e76\u4e0d\u76f4\u63a5\u5bf9\u5e94<\/p>\n<h3>\u8be6\u7ec6\u8bf4\u660e<\/h3>\n<hr \/>\n<h4>Non DFS Used \u7684\u8ba1\u7b97\u516c\u5f0f<\/h4>\n<p>HDFS DataNode \u5728\u8ba1\u7b97\u201cNon DFS Used\u201d\u65f6\uff0c\u5e76\u975e\u76f4\u63a5\u53d6\u7cfb\u7edf df \u4e2d\u7684\u201c\u5df2\u7528\u201d\u51cf\u53bb Used\uff0c\u800c\u662f\u57fa\u4e8e\u6bcf\u5757\u6302\u8f7d\u76d8\u7684\u7c92\u5ea6\uff0c\u6309\u5982\u4e0b\u903b\u8f91\u5224\u5b9a\uff1a<\/p>\n<p><strong>\u5355\u5757\u78c1\u76d8<\/strong>\u7684 \u503c\u8ba1\u7b97\u5982\u4e0b\uff1a<\/p>\n<pre><code>\u5982\u679c \nper_disk_used - per_dfs_data_used < reserved  ,\n\u5219 \nper_Non_DFS_Used = 0 \uff1b\n\n\u5982\u679c\nper_disk_used - per_dfs_data_used > = reserved ,\n\u5219\nper_Non_DFS_Used =   per_disk_used - per_df_data_used - reserved\n<\/code><\/pre>\n<p><strong>50070\u9875\u9762\u4e0a\u663e\u793a\u7684non dfs used \u503c\u4e3a<\/strong>\uff1a<\/p>\n<p>per_Non_DFS_Used1 +per_Non_DFS_Used2+\u2026\u2026 +per_Non_DFS_UsedN<\/p>\n<p><strong>\u53c2\u6570\u89e3\u91ca\uff1a<\/strong><br \/>\nper_disk_used \uff1a\u5355\u5757\u78c1\u76d8\uff08\u6302\u8f7d\u70b9\uff09\u7684 \u603b\u5df2\u7528\u7a7a\u95f4\uff08\u901a\u8fc7 OS \u7edf\u8ba1\uff0c\u5355\u4f4d\u901a\u5e38\u4e3a\u5b57\u8282\uff09<br \/>\ndfs_data_used \uff1a\u8be5\u78c1\u76d8\u4e0a HDFS \u6570\u636e\u76ee\u5f55\uff08  \/xx\/hadoop\/data  \uff09\u7684\u5b9e\u9645\u4f7f\u7528\u91cf<br \/>\nreserved  \uff1a \u914d\u7f6e\u53c2\u6570   dfs.datanon_DFS_Usedode.du.reserved   \u7684\u503c\uff08\u6bcf\u5757\u78c1\u76d8\u9884\u7559\u7684\u4fdd\u62a4\u7a7a\u95f4\uff0c\u5355\u4f4d\u5b57\u8282\uff09<br \/>\nper_Non_DFS_Used\uff1a \u5355\u5757\u78c1\u76d8\u7684non_DFS_Used\u7684\u503c<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981\u63cf\u8ff0 \u5728 HDFS \u4e2d\uff0cNameNode Web UI (50070\u9875\u9762)\u6216 hdfs dfsadmin  ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/kbwp.transwarp.cn\/?p=18315\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":17,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[121],"tags":[],"class_list":["post-18315","post","type-post","status-publish","format-standard","hentry","category-121"],"acf":[],"_links":{"self":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/18315","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\/17"}],"replies":[{"embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18315"}],"version-history":[{"count":1,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/18315\/revisions"}],"predecessor-version":[{"id":18627,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=\/wp\/v2\/posts\/18315\/revisions\/18627"}],"wp:attachment":[{"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18315"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18315"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kbwp.transwarp.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18315"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}