Allow the OS to mmap file for reading sst tables. Default: false @param allowMmapReads true if mmap reads are allowed. @return the instance of the cu

<p>Sets the number of background worker threads of the flush pool for this environment.</p> <p>Default number: 1</p> @param num the number of threads

Allows OS to incrementally sync files to disk while they are being written, asynchronously, in the background. Issue one request for every bytes_per_s

<p>Different levels can have different compression policies. There are cases where most lower levels would like to use quick compression algorithms wh

Compress blocks using the specified compression algorithm. This parameter can be changed dynamically. Default: SNAPPY_COMPRESSION, which gives light

Fill the cache when loading the block-based sst formatted db. Callers may wish to set this field to false for bulk scans. Default: true @param fillCa

Number of locks used for inplace update Default: 10000, if inplace_update_support = true, else 0. @param inplaceUpdateNumLocks the number of locks us

Specifies the maximum number of concurrent background compaction jobs, submitted to the default LOW priority thread pool. If you're increasing this, a

Set the maximum size of the write batch. @param maxBytes the maximum size in bytes.

Number of open files that can be used by the DB. You may need to increase this if your database has a large working set. Value -1 means files opened

A global cache for table-level rows. Default: null (disabled) @param rowCache The global row cache @return the reference to the current options.

If true, all data read from underlying storage will be verified against corresponding checksums. Default: true @param verifyChecksums if true, then c

Use passed {@link WriteBufferManager} to control memory usage across multiple column families and/or DB instances. Check <a href="https://github.com/

If true, the write will be flushed from the operating system buffer cache (by calling WritableFile::Sync()) before the write is considered complete.

Gets the number of tests that should run.

TODO(AR) consider refactoring to share this between here and rocksjni.cc

TODO(AR) consider refactoring to share this between here and rocksjni.cc cf multi get

TODO(AR) consider refactoring to share this between here and rocksjni.cc

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Same as fixed length prefix extractor, except that when slice is shorter than the fixed length, it will use the full key. @param n use the first n by

Indicates the upper layers if the current WritableFile implementation uses direct IO.

Gets the user supplied value.

If true, all data read from underlying storage will be verified against corresponding checksums. Default: true @return true if checksum verification

Reference to {@link WriteBufferManager} used by it. <br> Default: null (Disabled) @return a reference to WriteBufferManager

Return size of write buffer size. @return size of write buffer. @see #setWriteBufferSize(long)

finish writing an object val

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Adds a test part result to the list.

for micros < 10ms, print "XX us". for micros < 10sec, print "XX ms". for micros >= 10 sec, print "XX sec". for micros <= 1 hour, print Y:X M:S". for m

Returns true if any one of specified files are being compacted

Will lock the mutex_, will wait for completion if wait is true

This method is called by both the leader and parallel followers

at the moment Flink configures filters (can be already created) only once when user creates state otherwise it can lead to ListElementFilter leak in C

nullptr if immutable_db_options_.paranoid_checks==false