Baseline Resync Enhancement #244
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| @@ -379,17 +379,6 @@ void HSHomeObject::on_shard_message_commit(int64_t lsn, sisl::blob const& h, hom | |||
| local_create_shard(shard_info, v_chunk_id, blkids.chunk_num(), blkids.blk_count()); | |||
| if (ctx) { ctx->promise_.setValue(ShardManager::Result< ShardInfo >(shard_info)); } | |||
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| // update pg's total_occupied_blk_count | |||
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Redundant, these codes are already put into the local_create_shard.
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Codecov ReportAttention: Patch coverage is
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## baseline_resync #244 +/- ##
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- Coverage 65.52% 62.97% -2.55%
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Files 33 33
Lines 2271 2385 +114
Branches 254 271 +17
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+ Hits 1488 1502 +14
- Misses 659 753 +94
- Partials 124 130 +6 ☔ View full report in Codecov by Sentry. |
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| @@ -354,6 +360,13 @@ HSHomeObject::blob_put_get_blk_alloc_hints(sisl::blob const& header, cintrusive< | |||
| return folly::makeUnexpected(homestore::ReplServiceError::FAILED); | |||
| } | |||
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| auto pg_iter = _pg_map.find(msg_header->pg_id); | |||
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NIT: can we change this part to is_pg_present
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Here we need to get the pg_iter as we are going to check index, so we can't use is_pg_present directly.
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Found there is already a pg_exists function, remove is_pg_present function.
This commit addresses blob duplication issues caused by resync, it mainly happens when resend snapshot mesg during baseline resync and apply log after snapshot completion. This helps avoid unnecessary GC due to duplicated data. This mechanism is effective only for duplicated blobs. Since we do not record the blks of the `shardInfo` stored in the data service, we are unable to skip data writes for duplicated shards.
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This PR enhances baseline resync:
This mechanism is effective only for duplicated blobs. Since we do not record the blks of the
shardInfostored in the data service, we are unable to skip data writes for duplicated shards.