{"id":2189,"date":"2024-03-12T09:23:52","date_gmt":"2024-03-12T09:23:52","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-are-memstore-and-storefile-in-hbase\/"},"modified":"2024-04-11T15:39:47","modified_gmt":"2024-04-11T15:39:47","slug":"what-are-memstore-and-storefile-in-hbase","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-are-memstore-and-storefile-in-hbase\/","title":{"rendered":"What are MemStore and StoreFile in HBase?"},"content":{"rendered":"<p>In <a href=\"https:\/\/hbase.apache.org\/\">HBase<\/a>, MemStore is a memory storage area used to store newly written data and updates. When a write request arrives at HBase, the data is first written to the MemStore and then asynchronously written to the StoreFile on disk in the background. MemStore holds recent data written in memory, and when it reaches a certain size, a flush operation is triggered to write the data to the StoreFile on disk.<\/p>\n<p>StoreFile is a persistent storage file in HBase used to store written data. It is stored in HDFS in the HFile format, allowing it to be read and queried by HBase. Once data from MemStore is flushed into StoreFile, MemStore is cleared and ready for the next writing operation. Data in StoreFile is accessed and queried by HBase through a Scanner.<\/p>\n<p>&nbsp;<\/p>\n<p>More tutorials<\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-use-fwrite-in-c-to-write-data-to-a-file\/\" target=\"_blank\" rel=\"noopener\">How to use fwrite in C to write data to a file?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/how-is-the-distributed-lock-mechanism-implemented-in-hbase\/\" target=\"_blank\" rel=\"noopener\">How is the distributed lock mechanism implemented in HBase?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/what-is-the-role-of-a-regionserver-in-hbase\/\" target=\"_blank\" rel=\"noopener\">What is the role of a RegionServer in HBase?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/what-is-the-purpose-of-bloomfilter-in-hbase\/\" target=\"_blank\" rel=\"noopener\">What is the purpose of BloomFilter in HBase?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/what-is-the-blockcache-in-hbase\/\" target=\"_blank\" rel=\"noopener\">What is the BlockCache in HBase?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>In HBase, MemStore is a memory storage area used to store newly written data and updates. When a write request arrives at HBase, the data is first written to the MemStore and then asynchronously written to the StoreFile on disk in the background. MemStore holds recent data written in memory, and when it reaches a [&hellip;]<\/p>\n","protected":false},"author":14,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2189","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What are MemStore and StoreFile in HBase? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"In HBase, MemStore is a memory storage area used to store newly written data and updates. When a write request arrives at HBase\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/what-are-memstore-and-storefile-in-hbase\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are MemStore and StoreFile in HBase?\" \/>\n<meta property=\"og:description\" content=\"In HBase, MemStore is a memory storage area used to store newly written data and updates. 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