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changxue commented on IOTDB-5164: --------------------------------- 磁盘总共200G, 所以显示的230G可能是虚的。为特例。 > [disk]datanode takes too much disk space, should improve > -------------------------------------------------------- > > Key: IOTDB-5164 > URL: https://issues.apache.org/jira/browse/IOTDB-5164 > Project: Apache IoTDB > Issue Type: Improvement > Reporter: changxue > Assignee: 陈哲涵 > Priority: Major > Attachments: iotdb-common.properties, iotdb-confignode.properties, > iotdb-datanode.properties > > > [disk]datanode takes too much disk space, should improve > Here is the disk taking state of one node, it shows 124G data would take 230G > in one node, and there are 3 nodes with 3 replicas, so 124G data would take 6 > times of real one. This is too much. > {code} > 124G ./datanode/data/sequence > 51M ./datanode/data/unsequence > 104G ./datanode/data/snapshot > 228G ./datanode/data > 414M ./datanode/wal/root.test-0 > 401M ./datanode/wal/root.test-3 > 394M ./datanode/wal/root.test-1 > 410M ./datanode/wal/root.test-2 > 394M ./datanode/wal/root.test-4 > 2.0G ./datanode/wal > 4.0K ./datanode/system/compression_ratio > 16K ./datanode/system/schema > 4.0K ./datanode/system/roles > 8.0K ./datanode/system/users > 48K ./datanode/system/databases > 4.0K ./datanode/system/upgrade > 8.0K ./datanode/system/udf > 100K ./datanode/system > 5.2M ./datanode/consensus/schema_region > 356K ./datanode/consensus/data_region > 5.6M ./datanode/consensus > 230G ./datanode > 4.0K ./confignode/system/roles > 8.0K ./confignode/system/users > 4.0K ./confignode/system/procedure > 24K ./confignode/system > 4.1M ./confignode/consensus/47474747-4747-4747-4747-000000000000 > 4.1M ./confignode/consensus > 4.1M ./confignode > 230G . > {code} > 124G的数据,单个节点上要占用230G的空间,这是个3节点集群配置的3副本,所以,它总共要占用6倍的磁盘空间。这实在太多了,我觉得需要优化。咱们snapshot的设计是否有部分重复。这部分空间是否可以复用。 > 说明:可能是因为磁盘空间不足导致readonly, 然后snapshot。 -- This message was sent by Atlassian Jira (v8.20.10#820010)