Hi,
I used in the following code to detect data corruption in lucene 4.3.0:
/////////////////////////////////
import org.apache.lucene.index.CheckIndex;
...
CheckIndex checkIndex = new CheckIndex(getLuceneDirectory(folderPath));
CheckIndex.Status status = checkIndex.checkIndex();
if(!status.clean) {
printStatusDetails(status);
}
private static void printStatusDetails(CheckIndex.Status status) {
if(status.toolOutOfDate) {
log("Index version and checking tool does not match, checking is not
conclusive");
return;
}
if(status.missingSegments) {
log("Cannot locate and load the segments_N file.");
}
if(status.missingSegmentVersion) {
log("Cannot read version number from segment_N file");
}
if(status.cantOpenSegments) {
log("Cannot open segment_N file");
}
if(status.numBadSegments > 0) {
log("There are (" + status.numBadSegments + ") out of (" +
status.numSegments + ") total segments");
}
}
private static Directory getLuceneDirectory(String path)
throws Exception {
return FSDirectory.open(new File(path));
}
///////////////////////////
Best regards, Lisheng
-----Original Message-----
From: ABlaise [mailto:[email protected]]
Sent: Friday, July 26, 2013 7:33 PM
To: [email protected]
Subject: Detect a corrupted index
Hi everyone !
So I am working on a Lucene index that will run on a server and since this
server might crash/be killed at any time, even during the creation of an
index, I would like to be able to detect if an index is corrupted or not. I
don't care about repairing it, rebuilding it from scratch doesn't take too
long.
Any idea or hint on how I should proceed ? I searched for related topics but
they all seemed old and don't apply to Lucene 4.3.1
Thanks in advance
Adrien
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