Hi John,
I am a fresh man in this group . I have two questions when I used fastbit to do
my work.
1. To generate fastbit index, I follow two steps. First, ardea command to
generate fastbit data. Then ibis command to generate fastbit index.
My question is that whether I can reduce time which costs on generating
fastbit data by decrease string length for the text type column.
2. I used to generate fastbit index by the version 1.3.8 before. And now , I
upgrade my fastbit version to 2.0.2, then generating fastbit index does not
work well for the following parameters（fig1）. It seems that the parameter
“none” does not work. I compared two version of source code about index.cpp,
and located the piece of code which spec variable compare to “none”,”noindex”.
In my opinion the code is right, I am confused about the result that building
all index for columns.
$fastbithome/bin/ibis -v -d $indexdir \
-b 6 \
-b "a:none" \
-b "b:none" \
-b "c:none" \
-b 'd:keywords delimiters=";"' \
-b 'e:keywords delimiters=";"' \
-b 'f:keywords delimiters=";"' \
-b "*:<binning none/><encoding equality/>" -z
fig1
Thanks,
Roman
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