Vladimir Ozerov created IGNITE-2813:
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Summary: IGFS: Optimize metadata format.
Key: IGNITE-2813
URL: https://issues.apache.org/jira/browse/IGNITE-2813
Project: Ignite
Issue Type: Task
Components: IGFS
Affects Versions: 1.5.0.final
Reporter: Vladimir Ozerov
Fix For: 1.7
*Problem*
Currently our metadata appears to be too heavy.
Short summary of {{IgfsFIleInfo}}:
{{id}} - files and dirs
{{len}} - only files
{{blockSize}} - only files
{{props}} - files and dirs
{{lockId}} - only files
{{affKey}} - only files
{{fileMap}} - only files
{{accessTime}} - files and dirs
{{modificationTime}} - files and dirs
{{listing}} - only dirs
{{evictExclude}} - only files
The same applies to {{IgfsListingEntry}}
*Solution*
1) Split files and directories into separate classes. This will improve both
performance and maintainability of {{IgfsFileInfo}} class.
2) Investigate whether we need {{IgfsListingEntry}} at all. It looks like we
only need it for "listPaths" operation. Can we simply replace it with "String
-> IgniteUuid" map?
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