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https://issues.apache.org/jira/browse/IOTDB-2049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17465570#comment-17465570
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ZhaoXin commented on IOTDB-2049:
--------------------------------
Implementation of SchemaFIle can be organized as 3 steps, listed from top to
bottom as belowed:
# SchemaFile Interface. It provides persistent methods for MNode from
MTreeCache which is a part of memory-based index for IoTDB.
# File Space Management. It records free space of SchemaFile and allocate
pages for request from SchemaFile Interface.
# SlottedFile Interface. It writes serialized MNode to designated Segment
offset, with pre-allocated offset if needed. It deserialize MNode from
designated Segment and specified node name. Page is the granularity of its
access to fisk.
> Persistence Schema: Disk file format
> ------------------------------------
>
> Key: IOTDB-2049
> URL: https://issues.apache.org/jira/browse/IOTDB-2049
> Project: Apache IoTDB
> Issue Type: Improvement
> Reporter: Jialin Qiao
> Assignee: ZhaoXin
> Priority: Major
> Original Estimate: 128h
> Remaining Estimate: 128h
>
> # Implement MetaFile I/O programs, including MNode serialization and
> deserialization, byteBuffer read and write.
> # Integrate MetaFile with MNodeAccess framework to validate and test. Since
> this, the workspace of metadata has already been extended to disk.
> # Performance test.
> # Implement recovery function.
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