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Open DB in read-only mode #213

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eupn opened this issue Oct 24, 2018 · 6 comments
Closed

Open DB in read-only mode #213

eupn opened this issue Oct 24, 2018 · 6 comments
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@iSynaptic
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@eupn
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eupn commented Oct 24, 2018 •
edited

It would be nice to add possibility to open DB in read-only mode, eg. at least for:

  • Reading DB from multiple processes
  • Create checkpoints of DB which is currently used by other process

This is supported by RocksDB, the only thing needed is to add FFI bindings and open_readonly method to DB structure.
@iSynaptic iSynaptic self-assigned this Feb 24, 2019
@iSynaptic
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@eupn I've just pushed the beginnings of ReadOnlyDB into #268. Right now all it supports is get_* operations, but it will soon support the other read operations.

@iSynaptic
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@eupn Here is one of the first tests for ReadOnlyDB.

rnarubin added a commit to Standard-Cognition/rust-rocksdb that referenced this issue May 8, 2019
@rnarubin
Add readonly option to opening the DB
c9a7fd3 
This patch is not meant for submitting upstream, there is a more robust
solution on the way rust-rocksdb#213
schmidek pushed a commit to schmidek/rust-rocksdb that referenced this issue Aug 1, 2019
@rnarubin @schmidek
Add readonly option to opening the DB
02dcb61 
This patch is not meant for submitting upstream, there is a more robust
solution on the way rust-rocksdb#213
@subu-cliqz subu-cliqz mentioned this issue Sep 12, 2019
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@eupn eupn closed this as completed Sep 18, 2019
rnarubin added a commit to Standard-Cognition/rust-rocksdb that referenced this issue Nov 14, 2019
@rnarubin
Add readonly option to opening the DB
a8848a1 
This patch is not meant for submitting upstream, there is a more robust
solution on the way rust-rocksdb#213
@ansjsun
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ansjsun commented Mar 9, 2020

@iSynaptic I can not found ReadOnlyDB in master branch .

@m1sterc001guy
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m1sterc001guy commented Oct 24, 2022 •
edited

Is there any update on this? It looks like eupn closed the issue when they merged a patch into a private branch, not the upstream branch. Does rust rocksdb support multiple processes reading from the same db (one in read-only mode) or is that not currently supported?

@eupn eupn reopened this Oct 24, 2022
@zdila
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zdila commented Jan 15, 2024

Any update on this?

@zdila
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zdila commented Mar 14, 2024

Actually it seems to be already implemented:

DB::open_for_read_only(...)

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@iSynaptic @zdila @ansjsun @m1sterc001guy @eupn @zaidoon1