ceremonyclient/pebble/sstable/testdata/size_estimate

# Sequence of ops which tests all of the code paths in the size_estimate type.

init 1
----
success

# Empty size should be 1
size
----
1

# There's a single inflight entry, so the size should be 4.
add_inflight 4
----
4

num_inflight_entries
----
1

num_entries
----
1

# Compression ratio defaults to 1, so the size of the inflight entry fully
# counts towards size.
size
----
4

# After compression, entry only had a size of 3. The total size is therefore
# 3, since this is the first entry. The max estimated size is 4 since we
# ensure that it is monotonically non decreasing.
entry_written 3 4
----
4

num_entries
----
1

# There should be 0 inflight entries once the previous entry has been written.
num_inflight_entries
----
0

# Compression ratio is 0.75 at this point. The total size is 3, and the inflight
# size is 5, so that returned size is uint64(3 + 0.75*5) = uint64(6.75).
add_inflight 5
----
6

num_entries
----
2

# We don't clear the empty size, so even after clearing a size of 1 is returned.
clear
----
1

# Test writing multiple inflight entries.
add_inflight 4
----
4

add_inflight 5
----
9

num_entries
----
2

num_inflight_entries
----
2

# First inflight entry written. The entry didn't get compressed. The total size
# now is less than 9, but the max estimated size should still be 9.
entry_written 4 4
----
9

num_entries
----
2

num_inflight_entries
----
1

# At this point, inflightSize is 13, the totalSize is 4. The compression ratio
# is 1. So, the returned size should be 17.
add_inflight 8
----
17

# One entry has been written.
num_written_entries
----
1

# The inflight entry had a size of 5, but the entry added had a size of 3
# because of compression/size estimation. The compression ratio is (4+3)/(4+5)
# = 0.77 at this point. The inflightSize is 8. The true size is 7+8*0.77 =
# 13.22, but the maxEstimatedSize is returned.
entry_written 7 5
----
17

# The inflight size is 0, and the total size is 11.
entry_written 11 8
----
17

num_written_entries
----
3

# The compression ratio is (4+3+4)/(4+5+8)=0.647, and the inflight size is 20,
# 20*0.64 = 12.94, so the total size is uint64(12.94 + 11)
add_inflight 20
----
23

num_inflight_entries
----
1

# We can write an entry, which increases the written size from 11 to 19, but
# it might not have an inflightSize, because it was never inflight. In such a
# case, the numInflightEntries, shouldn't be decreased.
entry_written 19 0
----
31

num_inflight_entries
----
1

num_written_entries
----
4