LDB can read WAL.
Summary:
Add option to read WAL and print a summary for each record.
facebook task => #1885013
E.G. Output :
./ldb dump_wal --walfile=/tmp/leveldbtest-5907/dbbench/026122.log --header
Sequence,Count,ByteSize
49981,1,100033
49981,1,100033
49982,1,100033
49981,1,100033
49982,1,100033
49983,1,100033
49981,1,100033
49982,1,100033
49983,1,100033
49984,1,100033
49981,1,100033
49982,1,100033
Test Plan:
Works run
./ldb read_wal --wal-file=/tmp/leveldbtest-5907/dbbench/000078.log --header
Reviewers: dhruba, heyongqiang
Reviewed By: dhruba
CC: emayanke, leveldb, zshao
Differential Revision: https://reviews.facebook.net/D6675