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Commit638cf09

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Handle 5-char filenames in SlruScanDirectory
Original users of slru.c were all producing 4-digit filenames, so thatwas all that that code was prepared to handle. Changes to multixact.cin the course of commit0ac5ad5 made pg_multixact/members create5-digit filenames once a certain threshold was reached, whichSlruScanDirectory wasn't prepared to deal with; in particular,5-digit-name files were not removed during truncation. Change thatroutine to make it aware of those files, and have it process them justlike any others.Right now, some pg_multixact/members directories will contain a mixtureof 4-char and 5-char filenames. A future commit is expected fix thingsso that each slru.c user declares the correct maximum width for thefiles it produces, to avoid such unsightly mixtures.Noticed while investigating bug #8673 reported by Serge Negodyuck.
1 parenta50d976 commit638cf09

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  • src/backend/access/transam

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‎src/backend/access/transam/slru.c

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1293,8 +1293,12 @@ SlruScanDirectory(SlruCtl ctl, SlruScanCallback callback, void *data)
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cldir=AllocateDir(ctl->Dir);
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while ((clde=ReadDir(cldir,ctl->Dir))!=NULL)
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{
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if (strlen(clde->d_name)==4&&
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strspn(clde->d_name,"0123456789ABCDEF")==4)
1296+
size_tlen;
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len=strlen(clde->d_name);
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if ((len==4||len==5)&&
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strspn(clde->d_name,"0123456789ABCDEF")==len)
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{
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segno= (int)strtol(clde->d_name,NULL,16);
13001304
segpage=segno*SLRU_PAGES_PER_SEGMENT;

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