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Revision d1aaaf718c04e87eb3599744eb850d8f30134323 authored by Dhruba Borthakur on 21 May 2013, 18:37:06 UTC, committed by Dhruba Borthakur on 21 May 2013, 20:50:20 UTC 
Ability to set different size fanout multipliers for every level.
 
Summary:
There is an existing field Options.max_bytes_for_level_multiplier that
sets the multiplier for the size of each level in the database.

This patch introduces the ability to set different multipliers
for every level in the database. The size of a level is determined
by using both max_bytes_for_level_multiplier as well as the
per-level fanout.

size of level[i] = size of level[i-1] * max_bytes_for_level_multiplier
                   * fanout[i-1]

The default value of fanout is 1, so that it is backward compatible.

Test Plan: make check

Reviewers: haobo, emayanke

Reviewed By: emayanke

CC: leveldb

Differential Revision: https://reviews.facebook.net/D10863
1 parent c3c13db
Raw File
build_detect_version 
#!/bin/sh
#
# Record the version of the source that we are compiling.
# We keep a record of the git revision in util/version.cc. This source file
# is then built as a regular source file as part of the compilation process.
# One can run "strings executable_filename | grep _build_" to find the version of
# the source that we used to build the executable file.
#

# create git version file
VFILE=$(mktemp)
trap "rm $VFILE" EXIT

# check to see if git is in the path
which git > /dev/null

if [ "$?" = 0 ]; then
  env -i git rev-parse HEAD | awk ' BEGIN {print "#include \"build_version.h\""} {print "const char * leveldb_build_git_sha = \"leveldb_build_git_sha:" $0"\";"} END {}' >  ${VFILE}
else
  echo "git not found"| awk ' BEGIN {print "#include \"build_version.h\""} {print "const char * leveldb_build_git_sha = \"leveldb_build_git_sha:git not found\";"} END {}' > ${VFILE}
fi

date | awk 'BEGIN {} {print "const char * leveldb_build_git_datetime = \"leveldb_build_git_datetime:"$0"\";"} END {} ' >> ${VFILE}
echo "const char * leveldb_build_compile_date = __DATE__;" >> ${VFILE}
echo "const char * leveldb_build_compile_time = __TIME__;" >> ${VFILE}

OUTFILE=util/build_version.cc
if [ ! -e $OUTFILE ] || ! cmp -s $VFILE $OUTFILE; then
    cp $VFILE $OUTFILE
fi
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