Make Indexes a memory-mapped file in closed segment

[hubcio]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 11652405091

Details

• 35 of 55 (63.64%) changed or added relevant lines in 6 files are covered.
• 3 unchanged lines in 3 files lost coverage.
• Overall coverage decreased (-0.004%) to 75.156%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
server/src/compat/storage_conversion/mod.rs	0	2	0.0%
server/src/streaming/storage.rs	0	2	0.0%
server/src/streaming/segments/storage.rs	2	5	40.0%
server/src/streaming/segments/index.rs	29	42	69.05%

Files with Coverage Reduction	New Missed Lines	%
server/src/streaming/storage.rs	1	22.66%
server/src/compat/storage_conversion/mod.rs	1	0.0%
sdk/src/cli/message/send_messages.rs	1	83.02%

Totals
Change from base Build 11652262744:	-0.004%
Covered Lines:	22776
Relevant Lines:	30305

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💛 - Coveralls