fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph

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sdong 4a4b8a1344 sst_dump to reduce number of file reads (#6836) ... Summary: sst_dump can issue many file reads from the file system. This doesn't work well with file systems without a OS cache, especially remote file systems. In order to mitigate this problem, several improvements are done: 1. --readahead_size is added, so that users can specify readahead size when scanning the data. 2. Force a 512KB tail readahead, which prevents three I/Os for footer, meta index and property blocks and hopefully index and filter blocks too. 3. Consoldiate SSTDump's I/Os before opening the file for read. Use the same file prefetch buffer. Pull Request resolved: https://github.com/facebook/rocksdb/pull/6836 Test Plan: Add a test that covers this new feature. Reviewed By: pdillinger Differential Revision: D21516607 fbshipit-source-id: 3ae43526286f67b2f4a5bdedfbc92719d579b87e		5 years ago
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adaptive	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
block_based	sst_dump to reduce number of file reads (#6836)	5 years ago
cuckoo	Pass a timeout to FileSystem for random reads (#6751)	5 years ago
plain	Pass a timeout to FileSystem for random reads (#6751)	5 years ago
block_fetcher.cc	Pass a timeout to FileSystem for random reads (#6751)	5 years ago
block_fetcher.h	Reduce memory copies when fetching and uncompressing blocks from SST files (#6689)	5 years ago
block_fetcher_test.cc	Reduce memory copies when fetching and uncompressing blocks from SST files (#6689)	5 years ago
cleanable_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
format.cc	Add tests for compression failure in BlockBasedTableBuilder (#6709)	5 years ago
format.h	Basic MultiGet support for partitioned filters (#6757)	5 years ago
get_context.cc	Stats for redundant insertions into block cache (#6681)	5 years ago
get_context.h	Stats for redundant insertions into block cache (#6681)	5 years ago
internal_iterator.h	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	5 years ago
iter_heap.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
iterator.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
iterator_wrapper.h	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	5 years ago
merger_test.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
merging_iterator.cc	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	5 years ago
merging_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
meta_blocks.cc	sst_dump to reduce number of file reads (#6836)	5 years ago
meta_blocks.h	sst_dump to reduce number of file reads (#6836)	5 years ago
mock_table.cc	Pass a timeout to FileSystem for random reads (#6751)	5 years ago
mock_table.h	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	5 years ago
multiget_context.h	Basic MultiGet support for partitioned filters (#6757)	5 years ago
persistent_cache_helper.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
persistent_cache_helper.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
persistent_cache_options.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
scoped_arena_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
sst_file_reader.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
sst_file_reader_test.cc	Allow table/sst_file_reader_test.cc to use custom Env (#6536)	5 years ago
sst_file_writer.cc	Make options.bottommost_compression, compression_opts and bottommost_compression_opts dynamically changeable. (#6615)	5 years ago
sst_file_writer_collectors.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_builder.h	sst_dump to reduce number of file reads (#6836)	5 years ago
table_properties.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_properties_internal.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_reader.h	Properly report IO errors when IndexType::kBinarySearchWithFirstKey is used (#6621)	5 years ago
table_reader_bench.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_reader_caller.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
table_test.cc	sst_dump to reduce number of file reads (#6836)	5 years ago
two_level_iterator.cc	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago
two_level_iterator.h	Replace namespace name "rocksdb" with ROCKSDB_NAMESPACE (#6433)	5 years ago