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WAL log retention policy based on archive size.

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Summary:
Archive cleaning will still happen every WAL_ttl seconds
but archived logs will be deleted only if archive size
is greater then a WAL_size_limit value.
Empty archived logs will be deleted evety WAL_ttl.

Test Plan:
1. Unit tests pass.
2. Benchmark.

Reviewers: emayanke, dhruba, haobo, sdong, kailiu, igor

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D13869
This commit is contained in:
shamdor
2013-11-06 18:46:28 -08:00
parent 292c2b3357
commit c2be2cba04
11 changed files with 228 additions and 59 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
tools/db_repl_stress.cc
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@@ -80,11 +80,14 @@ static void ReplicationThreadBody(void* arg) {
DEFINE_uint64(num_inserts, 1000, "the num of inserts the first thread should"
" perform.");
DEFINE_uint64(wal_ttl, 1000, "the wal ttl for the run(in seconds)");
DEFINE_uint64(wal_ttl_seconds, 1000, "the wal ttl for the run(in seconds)");
DEFINE_uint64(wal_size_limit_MB, 10, "the wal size limit for the run"
"(in MB)");
int main(int argc, const char** argv) {
google::SetUsageMessage(std::string("\nUSAGE:\n") + std::string(argv[0]) +
" --num_inserts=<num_inserts> --wal_ttl=<WAL_ttl_seconds>");
" --num_inserts=<num_inserts> --wal_ttl_seconds=<WAL_ttl_seconds>" +
" --wal_size_limit_MB=<WAL_size_limit_MB>");
google::ParseCommandLineFlags(&argc, const_cast<char***>(&argv), true);
Env* env = Env::Default();
@@ -93,7 +96,8 @@ int main(int argc, const char** argv) {
default_db_path += "db_repl_stress";
Options options;
options.create_if_missing = true;
options.WAL_ttl_seconds = FLAGS_wal_ttl;
options.WAL_ttl_seconds = FLAGS_wal_ttl_seconds;
options.WAL_size_limit_MB = FLAGS_wal_size_limit_MB;
DB* db;
DestroyDB(default_db_path, options);