Andrei Dulvac created OAK-2723:
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Summary: FileStore does not scale because of precomputed graph on
TarReader
Key: OAK-2723
URL: https://issues.apache.org/jira/browse/OAK-2723
Project: Jackrabbit Oak
Issue Type: Bug
Components: oak-core
Affects Versions: 1.1.8
Reporter: Andrei Dulvac
The {{FileStore}} keeps a reference to all {{TarReader}} object, one per each
file. In my test, for an ~350 Gb repository, that was ~1100 tar files, with a
{{TarReader}} for each.
The problem is {{TarReader}} keeps a reference to a precomputed _graph_
{{ByteBuffer}}, which is not really used that much.
The effect is you need more that 6GB of Ram just to instantiate the
{{FileStore}} object.
The attached patch fixes this issue.
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