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Inline doc for format_version 4 (#4350)

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Summary:
Fixes #4337
Pull Request resolved: https://github.com/facebook/rocksdb/pull/4350

Differential Revision: D9700871

Pulled By: maysamyabandeh

fbshipit-source-id: fe1e07803783f34588dc14aba66d51117ca4a180
This commit is contained in:
Maysam Yabandeh 2018-09-07 07:51:26 -07:00 committed by Facebook Github Bot
parent ced618cf39
commit 655ef7d77f
1 changed files with 6 additions and 0 deletions
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6
include/rocksdb/table.h
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@ -239,6 +239,12 @@ struct BlockBasedTableOptions {
// version 5.15, you should probably use this.
// This option only affects newly written tables. When reading existing
// tables, the information about version is read from the footer.
// 4 -- Can be read by RocksDB's versions since 5.16. Changes the way we
// encode the values in index blocks. If you don't plan to run RocksDB before
// version 5.16 and you are using index_block_restart_interval > 1, you should
// probably use this as it would reduce the index size.
// This option only affects newly written tables. When reading existing
// tables, the information about version is read from the footer.
uint32_t format_version = 2;
// Store index blocks on disk in compressed format. Changing this option to