Hi all
I got problem with merging indexes,
I had to split up the indexing of my data into 20 different indexes(based on a
primary key)
I wanted to merge them all into one master index
for example i have
/xxx/lucene/tmp/1001-1000
/xxx/lucene/tmp/1001-2000
/xxx/lucene/tmp/2001-3001 ....etc
i want to merge them into the index
/xxx/lucene/index/complete
i was hoping to merge the indexes as the jobs get completed,
i tried the following code , createNew: is a boolean variable turned to true for the
first merge
and then is turned to false for all other indexes
tmpRoot: is the folder in which the split jobs are entered,
d1: is the index i wanted merged
Directory allIndexes[] = new Directory[1];
allIndexes[0] = FSDirectory.getDirectory(new File(tmpRoot + d1), false);
aLog.info("Dir's opened for merge ");
IndexWriter iWriter = new IndexWriter(FSDirectory.getDirectory(new File(op),
true), myAnalyzer, createNew);
// IndexWriter iWriter = new IndexWriter(FSDirectory.getDirectory(new
File(op), true), myAnalyzer, false);
aLog.fatal("Retrieved Indexes preparing to MERGE ");
iWriter.addIndexes(allIndexes);
aLog.fatal("Preparing to optimize ");
iWriter.optimize();
aLog.fatal("Closing indexes ");
iWriter.close();
the problems is the first run happens fine , but the next job runs and ends up
deleting the contents of the master index directory
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