Dhruba Borthakur
292c2b3357
Fix stress test failure when using mmap-reads.
Summary:
The mmap-read file->Read() does not use the scratch buffer to
read in file-contents.
Test Plan: ./db_stress --test_batches_snapshots=1 --ops_per_thread=100000000 --threads=32 --write_buffer_size=4194304 --destroy_db_initially=0 --reopen=0 --readpercent=45 --prefixpercent=5 --writepercent=35 --delpercent=5 --iterpercent=10 --db=/tmp/dhruba --max_key=100000000 --disable_seek_compaction=0 --mmap_read=1 --block_size=16384 --cache_size=1048576 --open_files=500000 --verify_checksum=1 --sync=1 --disable_wal=0 --disable_data_sync=0 --target_file_size_base=2097152 --target_file_size_multiplier=2 --max_write_buffer_number=3 --max_background_compactions=20 --max_bytes_for_level_base=10485760 --filter_deletes=0
Reviewers: haobo, kailiu
Reviewed By: kailiu
CC: leveldb, kailiu, emayanke
Differential Revision: https://reviews.facebook.net/D13923
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