my replication got errors like :
Unable to move index file from: 
/home/data/tuba/search-index/eshequn.post.db_post/index.20101122034500/_21.frq 
to: 
/home/data/tuba/search-index/eshequn.post.db_post/index.20101122031000/_21.frq

I looked at log and found the last slave replication commit before the error is 
:
[2010-11-22 
15:10:18][INFO][pool-6-thread-1][SolrDeletionPolicy.java(114)]SolrDeletionPolicy.onInit:
 commits:num=4
        
commit{dir=/home/data/tuba/search-index/eshequn.post.db_post/index.20101122031000,segFN=segments_3,version=1290358965331,generation=3,filenames=[_21.fdt,
 _21.frq, _21.prx, _21.tii, _21.nrm, _21.fdx, _21.tis, segments_3, _21.fnm]
        
commit{dir=/home/data/tuba/search-index/eshequn.post.db_post/index.20101122031000,segFN=segments_kq,version=1290358966074,generation=746,filenames=[_21.frq,
 _21.prx, _q8.frq, _21.tii, _q8.prx, _q8.tii, _q8.fdt, _21.nrm, _q8.fnm, 
_21.tis, _21.fdt, _q8.nrm, _q8.fdx, segments_kq, _q8.tis, _21.fdx, _21_1r.del, 
_21.fnm]
        
commit{dir=/home/data/tuba/search-index/eshequn.post.db_post/index.20101122031000,segFN=segments_ky,version=1290358966082,generation=754,filenames=[_21.frq,
 _qg.fnm, _qe.tis, _21.tii, _qe.nrm, _qg.nrm, _qg.fdt, _21_1u.del, _qd.tii, 
_qd.nrm, _qg.tii, _21.tis, _21.fdt, _qe.fdx, _qe.prx, _qf.tii, _21.fdx, 
_qf.nrm, segments_ky, _qf.fdt, _qe.fdt, _qd.fdt, _qf.tis, _21.prx, _qd_2.del, 
_qd.fnm, _qd.fdx, _qf.fdx, _qe.frq, _qd.prx, _21.nrm, _qd.frq, _qg.prx, 
_qg.tis, _qf.frq, _qd.tis, _qf.prx, _qe.tii, _qf.fnm, _qg.fdx, _qe.fnm, 
_qg.frq, _21.fnm]
        
commit{dir=/home/data/tuba/search-index/eshequn.post.db_post/index.20101122031000,segFN=segments_l3,version=1290358966087,generation=759,filenames=[_21.frq,
 _21.prx, _21.tii, _qn.fnm, _qn.fdt, _21_1u.del, _qn.fdx, _21.nrm, _qn.nrm, 
_qn.frq, _21.tis, _qn.prx, _21.fdt, segments_l3, _qn.tis, _qn.tii, _21.fdx, 
_21.fnm]

When the error happened, the dir index.20101122031000 had been deleted. Does 
the SolrDeletionPolicy delete the index dir not only files? The problem happend 
some times.Does anyone know the reason?

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