Bill Tschumy wrote:
I hate to plead, but I really need to do my best to recover my
customer's data. Does anyone have any pointers for how to manually (or
programmatically) repair this corrupted index?
On Oct 24, 2005, at 11:23 PM, Bill Tschumy wrote:
Many months ago I wrote this list about a corrupted index that one of
my customers had. It was a mystery that was never really solved.
Well, it has happened again and the stack trace looks almost
identical. Here is the exception:
java.io.FileNotFoundException: /Users/samegan/Library/Preferences/
Parsnips/IndexData/_1d.fnm (No such file or directory)
This doesn't look good. Open the "segments" file with a hex editor and
check it - is it just "_1d" there (apart from other unrecognizable stuff)?
You can try to manually "explode" the compound format into individual
files, and then try to go from there - please look at
org.apache.lucene.index.CompoundIndexReader how to read the compound
format. In the best case, this could mean that you will have to recreate
the .fnm file, in the worst case... well, you already know. :-/
This is a compound index, so I guess the .fnm file it is looking for
is internal to it or temporary in some way. The customer thinks the
problem was caused by accidentally pasting an entire document into
the "title" field and saving. I kind of doubt this caused the
problem, but you never know. I treat the "title" and the "body"
identically for indexing.
No, this is very unlikely. What is more likely the cause is that the
application (or machine) crashed during write or optimize.
The person is pretty panicked about his lost data. Does anyone have
any hints as to how to edit the file to get it back functioning
again? I've heard of people using hex editors for this.
After solving his immediate problem, I need to figure out why this is
happening. I haven't followed this list for a couple of months. Has
anything like this come up recently? I am using Lucene-1.4.3.
Upgrade?
--
Best regards,
Andrzej Bialecki <><
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