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class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#configuration-files">Configuration Files</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#state-related-files">State Related Files</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#metadata-related-files">MetaData Related Files</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#data-related-files">Data Related Files</a></li><!----><!--]--></ul></li><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#configuration-files-1">Configuration Files</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#state-related-files-1">State Related Files</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level2" href="#raft-related-files">Raft Related Files</a></li><li><ul class="vp-toc-list"><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#raft-log">Raft Log</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#raft-meta">Raft Meta</a></li><!----><!--]--><!--[--><li class="vp-toc-item"><a class="route-link vp-toc-link level3" href="#raft-catch-up">Raft Catch Up</a></li><!----><!--]--></ul></li><!--]--></ul><div class="vp-toc-marker" style="top:-1.7rem;"></div></div><!--[--><!----><!--]--></aside></div><!--[--><!----><!--]--><div class="theme-hope-content"><blockquote><p>Here are all files generated or used by IoTDB</p><p>Continuously Updating...</p></blockquote><h1 id="stand-alone" tabindex="-1"><a class="header-anchor" href="#stand-alone"><span>Stand-alone</span></a></h1><h2 id="configuration-files" tabindex="-1"><a class="header-anchor" href="#configuration-files"><span>Configuration Files</span></a></h2><blockquote><p>under conf directory</p></blockquote><ol><li>iotdb-engine.properties</li><li>logback.xml</li><li><a href="http://iotdb-env.sh" target="_blank" rel="noopener noreferrer">iotdb-env.sh<span><svg class="external-link-icon" xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path><polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg><span class="external-link-icon-sr-only">open in new window</span></span></a></li><li>jmx.access</li><li>jmx.password</li><li>iotdb-sync-client.properties <ul><li>only sync tool use it</li></ul></li></ol><blockquote><p>under directory basedir/system/schema</p></blockquote><ol><li>system.properties <ul><li>record all immutable properties, will be checked when starting IoTDB to avoid system errors</li></ul></li></ol><h2 id="state-related-files" tabindex="-1"><a class="header-anchor" href="#state-related-files"><span>State Related Files</span></a></h2><h3 id="metadata-related-files" tabindex="-1"><a class="header-anchor" href="#metadata-related-files"><span>MetaData Related Files</span></a></h3><blockquote><p>under directory basedir/system/schema</p></blockquote><h4 id="meta" tabindex="-1"><a class="header-anchor" href="#meta"><span>Meta</span></a></h4><ol><li>mlog.bin <ul><li>record the meta operation</li></ul></li><li>mtree-1.snapshot <ul><li>snapshot of metadata</li></ul></li><li>mtree-1.snapshot.tmp <ul><li>temp file, to avoid damaging the snapshot when updating it</li></ul></li></ol><h4 id="tags-attributes" tabindex="-1"><a class="header-anchor" href="#tags-attributes"><span>Tags&amp;Attributes</span></a></h4><ol><li>tlog.txt <ul><li>store tags and attributes of each TimeSeries</li><li>about 700 bytes for each TimeSeries</li></ul></li></ol><h3 id="data-related-files" tabindex="-1"><a class="header-anchor" href="#data-related-files"><span>Data Related Files</span></a></h3><blockquote><p>under directory basedir/data/</p></blockquote><h4 id="wal" tabindex="-1"><a class="header-anchor" href="#wal"><span>WAL</span></a></h4><blockquote><p>under directory basedir/wal</p></blockquote><ol><li>{StorageGroupName}-{TsFileName}/wal1 <ul><li>every storage group has several wal files, and every memtable has one associated wal file before it is flushed into a TsFile</li></ul></li></ol><h4 id="tsfile" tabindex="-1"><a class="header-anchor" href="#tsfile"><span>TsFile</span></a></h4><blockquote><p>under directory data/sequence or unsequence/{StorageGroupName}/{TimePartitionId}/</p></blockquote><ol><li>{time}-{version}-{mergeCnt}.tsfile <ul><li>normal data file</li></ul></li><li>{TsFileName}.tsfile.mod <ul><li>modification file</li><li>record delete operation</li></ul></li></ol><h4 id="tsfileresource" tabindex="-1"><a class="header-anchor" href="#tsfileresource"><span>TsFileResource</span></a></h4><ol><li>{TsFileName}.tsfile.resource <ul><li>descriptor and statistic file of a TsFile</li></ul></li><li>{TsFileName}.tsfile.resource.temp <ul><li>temp file</li><li>avoid damaging the tsfile.resource when updating it</li></ul></li><li>{TsFileName}.tsfile.resource.closing <ul><li>close flag file, to mark a tsfile closing so during restarts we can continue to close it or reopen it</li></ul></li></ol><h4 id="version" tabindex="-1"><a class="header-anchor" href="#version"><span>Version</span></a></h4><blockquote><p>under directory basedir/system/storage_groups/{StorageGroupName}/{TimePartitionId} or upgrade</p></blockquote><ol><li version="">Version- <ul><li>version file, record the max version in fileName of a storage group</li></ul></li></ol><h4 id="upgrade" tabindex="-1"><a class="header-anchor" href="#upgrade"><span>Upgrade</span></a></h4><blockquote><p>under directory basedir/system/upgrade</p></blockquote><ol><li>upgrade.txt <ul><li>record which files have been upgraded</li></ul></li></ol><h4 id="merge" tabindex="-1"><a class="header-anchor" href="#merge"><span>Merge</span></a></h4><blockquote><p>under directory basedir/system/storage_groups/{StorageGroup}/</p></blockquote><ol><li>merge.mods <ul><li>modification file generated during a merge</li></ul></li><li>merge.log <ul><li>record the progress of a merge</li></ul></li><li>tsfile.merge <ul><li>temporary merge result file, an involved sequence tsfile may have one during a merge</li></ul></li></ol><h4 id="authority" tabindex="-1"><a class="header-anchor" href="#authority"><span>Authority</span></a></h4><blockquote><p>under directory basedir/system/users/<br> under directory basedir/system/roles/</p></blockquote><h4 id="compressratio" tabindex="-1"><a class="header-anchor" href="#compressratio"><span>CompressRatio</span></a></h4><blockquote><p>under directory basedir/system/compression_ration</p></blockquote><ol><li calTimes="">Ration-{compressionRatioSum}- <ul><li>record compression ratio of each tsfile</li></ul></li></ol><hr><h1 id="cluster-mode" tabindex="-1"><a class="header-anchor" href="#cluster-mode"><span>Cluster-Mode</span></a></h1><blockquote><p>Attention: the following files are newly added</p></blockquote><h2 id="configuration-files-1" tabindex="-1"><a class="header-anchor" href="#configuration-files-1"><span>Configuration Files</span></a></h2><ol><li>iotdb-cluster.properties</li></ol><h2 id="state-related-files-1" tabindex="-1"><a class="header-anchor" href="#state-related-files-1"><span>State Related Files</span></a></h2><blockquote><p>under directory basedir/</p></blockquote><ol><li>node_identifier <ul><li>the identifier of the local node in a cluster</li></ul></li><li>partitions <ul><li>partition table file, records the distribution of data</li></ul></li><li>{time}_{random}.task <ul><li>pullSnapshotTask file, record the slots and owners. When a node joins a cluster,<br> it will create pullSnapshotTask file to track which data to be pulled</li><li>under directory basedir/raft/{nodeIdentifier}/snapshot_task/</li></ul></li></ol><h2 id="raft-related-files" tabindex="-1"><a class="header-anchor" href="#raft-related-files"><span>Raft Related Files</span></a></h2><blockquote><p>under directory basedir/system/raftLog/{nodeIdentifier}/</p></blockquote><h3 id="raft-log" tabindex="-1"><a class="header-anchor" href="#raft-log"><span>Raft Log</span></a></h3><ol><li version="">.data- <ul><li>raft committed logs, only save the latest 1000(configurable) committed logs</li></ul></li></ol><h3 id="raft-meta" tabindex="-1"><a class="header-anchor" href="#raft-meta"><span>Raft Meta</span></a></h3><ol><li>logMeta <ul><li>raft meta, like hardState and Meta <ul><li>hardState: voteFor, term</li><li>Meta: commitLogTerm, commitLogIndex, lastLogTerm, lastLogIndex</li><li>...</li></ul></li></ul></li><li>logMeta.tmp <ul><li>temp file, to avoid damaging the logMeta when updating it</li></ul></li></ol><h3 id="raft-catch-up" tabindex="-1"><a class="header-anchor" href="#raft-catch-up"><span>Raft Catch Up</span></a></h3><blockquote><p>under directory basedir/remote/{nodeIdentifier}/{storageGroupName}/{partitionNum}/</p></blockquote><ol><li>{fileName}.tsfile <ul><li>remote TsFile, will be loaded during snapshot installation</li></ul></li><li>{fileName}.tsfile.mod <ul><li>remote TsFile modification file, will be loaded during snapshot installation</li></ul></li></ol></div><!--[--><!----><!--]--><footer class="vp-page-meta"><div class="vp-meta-item edit-link"><a href="https://github.com/apache/iotdb-docs/edit/main/src/UserGuide/V0.13.x/QuickStart/ServerFileList.md" rel="noopener noreferrer" target="_blank" aria-label="Found Error? 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