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diff tests/fixtures/renames.svndump @ 1233:0d0132cba155

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editor: fix edge case with in memory file-store size limit There are a few cases where we will set a single file into to the editor's FileStore object more than once. Notably, for copied and then modified files, we will set it at least twice. Three times if editing fails (which it can for symlinks). If we pass the in-memory storage limit in between the first (or second if editing fails) time we set the file and the last time we set the file, we will write the data to the in memory store the first time and the file store the last time. We didn't remove it form the in-memory store though, and we always prefer reading from the in-memory store. This means we can sometimes end up with the wrong version of a file. This is fairly unlikely to happen in normal use since you need to hit the memory limit between two writes to the store for the same file. We only write a file multiple times if a) the file (and not one of it's parent directories) is copied and then modified or b) editing fails. From what I can tell, it's only common for editing to fail for symlinks, and they ten to be relatively small data that is unlikely to push over the limit. Finally, the default limit is 100MB which I would expect to be most often either well over (source code) or well under (binaries or automated changes) the size of the changes files in a single commit. The easiest way to reproduce this is to set the in-memory cache size to 0 and then commit a copied and modified symlink. The empty-string version from the failed editing will be the one that persists. I happened to stumble upon this while trying (and failing) to test a bug-fix for a related bug with identical symptoms (empty simlink). I have seen this in the wild, once, but couldn't reproduce it at the time. The repo in question is quite large and quite active, so I am quite confident in my estimation that this is a real, but very rare, problem. The test changes attached to this was mneant to test a related bug, but turned out not to actually cover the bug in question. They did trigger this bug though, and are worthwhile to test, so I kept them.
author David Schleimer <dschleimer@fb.com>
date Mon, 07 Apr 2014 17:51:59 -0700
parents c2a84d436202
children
line wrap: on
line diff
--- a/tests/fixtures/renames.svndump
+++ b/tests/fixtures/renames.svndump
@@ -1,6 +1,6 @@
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 a
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@@ -323,22 +560,26 @@ Node-path: trunk/deletedfile
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@@ -498,34 +820,37 @@ Node-action: add
 Node-copyfrom-rev: 5
 Node-copyfrom-path: branches/branch1/c
 Text-copy-source-md5: 2cd6ee2c70b0bde53fbe6cac3c8b8bb1
-Prop-content-length: 34
+Text-copy-source-sha1: 2b66fd261ee5c6cfc8de7fa466bab600bcfe4f69
 Text-content-length: 4
 Text-content-md5: 63fad9092ad37713ebe26b3193f89c41
-Content-length: 38
-
-K 13
-svn:mergeinfo
-V 0
+Text-content-sha1: ccfb93b7bac6f1520f0adc0eebc2cafe9da80f42
+Content-length: 4
 
-PROPS-END
 c
 c
 
 
+Node-path: branches/branch1/linkc1
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 5
+Node-copyfrom-path: branches/branch1/linkc
+Text-copy-source-md5: aaa83258c434079cc82a5b4868340dc0
+Text-copy-source-sha1: d347f561790aa523b963fc1714c64e1d158cc5d7
+Text-content-length: 7
+Text-content-md5: ea7a177c3c3af680cf62010efe71275f
+Text-content-sha1: d780ef86a4c5016931861dc32373a1155755e404
+Content-length: 7
+
+link cc
+
 Node-path: trunk/a1
 Node-kind: file
 Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/a
 Text-copy-source-md5: 60b725f10c9c85c70d97880dfe8191b3
-Prop-content-length: 34
-Content-length: 34
-
-K 13
-svn:mergeinfo
-V 0
-
-PROPS-END
+Text-copy-source-sha1: 3f786850e387550fdab836ed7e6dc881de23001b
 
 
 Node-path: trunk/a2
@@ -534,14 +859,7 @@ Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/a
 Text-copy-source-md5: 60b725f10c9c85c70d97880dfe8191b3
-Prop-content-length: 34
-Content-length: 34
-
-K 13
-svn:mergeinfo
-V 0
-
-PROPS-END
+Text-copy-source-sha1: 3f786850e387550fdab836ed7e6dc881de23001b
 
 
 Node-path: trunk/b
@@ -549,6 +867,7 @@ Node-kind: file
 Node-action: change
 Text-content-length: 4
 Text-content-md5: 06ac26ed8b614fc0b141e4542aa067c2
+Text-content-sha1: f6980469e74f7125178e88ec571e06fe6ce86e95
 Content-length: 4
 
 b
@@ -561,16 +880,12 @@ Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/b
 Text-copy-source-md5: 3b5d5c3712955042212316173ccf37be
-Prop-content-length: 34
+Text-copy-source-sha1: 89e6c98d92887913cadf06b2adb97f26cde4849b
 Text-content-length: 4
 Text-content-md5: 33cb6785d50937d8d307ebb66d6259a7
-Content-length: 38
-
-K 13
-svn:mergeinfo
-V 0
+Text-content-sha1: 7a6478264aa11a0f4befef356c03e83f2b1f6eba
+Content-length: 4
 
-PROPS-END
 b
 c
 
@@ -580,14 +895,6 @@ Node-kind: dir
 Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/da
-Prop-content-length: 34
-Content-length: 34
-
-K 13
-svn:mergeinfo
-V 0
-
-PROPS-END
 
 
 Node-path: trunk/da2
@@ -595,16 +902,50 @@ Node-kind: dir
 Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/da
-Prop-content-length: 34
-Content-length: 34
 
-K 13
-svn:mergeinfo
-V 0
 
-PROPS-END
+Node-path: trunk/linka1
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 2
+Node-copyfrom-path: trunk/linka
+Text-copy-source-md5: c118dba188202a1efc975bef6064180b
+Text-copy-source-sha1: 41f94e4692313bf7f7c92aa600002f1dff93d6bf
 
 
+Node-path: trunk/linka2
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 2
+Node-copyfrom-path: trunk/linka
+Text-copy-source-md5: c118dba188202a1efc975bef6064180b
+Text-copy-source-sha1: 41f94e4692313bf7f7c92aa600002f1dff93d6bf
+
+
+Node-path: trunk/linkb
+Node-kind: file
+Node-action: change
+Text-content-length: 7
+Text-content-md5: 00b18251bf95a42453612a62619254c0
+Text-content-sha1: 8d00f006e36676f00d40c3935b6992cbb8349c2b
+Content-length: 7
+
+link bb
+
+Node-path: trunk/linkb1
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 2
+Node-copyfrom-path: trunk/linkb
+Text-copy-source-md5: e9292b8c4fca95ac8c70b4ae040d0b79
+Text-copy-source-sha1: 7325442a5f7383205e66db563025d51535883784
+Text-content-length: 7
+Text-content-md5: 1c9f17365658cf9ea7904568eff11f27
+Text-content-sha1: 163de098ef857862584154ca26e3d028fb34ba45
+Content-length: 7
+
+link bc
+
 Node-path: trunk/a
 Node-action: delete
 
@@ -613,22 +954,26 @@ Node-path: trunk/da
 Node-action: delete
 
 
+Node-path: trunk/linka
+Node-action: delete
+
+
 Revision-number: 7
-Prop-content-length: 121
-Content-length: 121
+Prop-content-length: 125
+Content-length: 125
 
-K 7
-svn:log
-V 19
-copy b from branch1
 K 10
 svn:author
-V 7
-pmezard
+V 10
+dschleimer
 K 8
 svn:date
 V 27
-2008-12-05T22:48:52.154125Z
+2014-04-07T22:34:17.969842Z
+K 7
+svn:log
+V 19
+copy c from branch1
 PROPS-END
 
 Node-path: trunk/c
@@ -637,32 +982,34 @@ Node-action: add
 Node-copyfrom-rev: 5
 Node-copyfrom-path: branches/branch1/c
 Text-copy-source-md5: 2cd6ee2c70b0bde53fbe6cac3c8b8bb1
-Prop-content-length: 34
-Content-length: 34
+Text-copy-source-sha1: 2b66fd261ee5c6cfc8de7fa466bab600bcfe4f69
 
-K 13
-svn:mergeinfo
-V 0
 
-PROPS-END
+Node-path: trunk/linkc
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 5
+Node-copyfrom-path: branches/branch1/linkc
+Text-copy-source-md5: aaa83258c434079cc82a5b4868340dc0
+Text-copy-source-sha1: d347f561790aa523b963fc1714c64e1d158cc5d7
 
 
 Revision-number: 8
-Prop-content-length: 126
-Content-length: 126
+Prop-content-length: 130
+Content-length: 130
 
-K 7
-svn:log
-V 24
-copy stuff from the past
 K 10
 svn:author
-V 7
-pmezard
+V 10
+dschleimer
 K 8
 svn:date
 V 27
-2008-12-05T22:48:55.160439Z
+2014-04-07T22:34:18.068356Z
+K 7
+svn:log
+V 24
+copy stuff from the past
 PROPS-END
 
 Node-path: trunk/deleteddir
@@ -678,24 +1025,34 @@ Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/deletedfile
 Text-copy-source-md5: 4d742b2f247bec99b41a60acbebc149a
+Text-copy-source-sha1: 1ef5922542033869106719d682a87ed706af4ddd
+
+
+Node-path: trunk/deletedlink
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 2
+Node-copyfrom-path: trunk/deletedlink
+Text-copy-source-md5: e9292b8c4fca95ac8c70b4ae040d0b79
+Text-copy-source-sha1: 7325442a5f7383205e66db563025d51535883784
 
 
 Revision-number: 9
-Prop-content-length: 140
-Content-length: 140
+Prop-content-length: 144
+Content-length: 144
 
-K 7
-svn:log
-V 38
-copy stuff from the past before change
 K 10
 svn:author
-V 7
-pmezard
+V 10
+dschleimer
 K 8
 svn:date
 V 27
-2008-12-05T22:48:59.163460Z
+2014-04-07T22:34:18.201489Z
+K 7
+svn:log
+V 38
+copy stuff from the past before change
 PROPS-END
 
 Node-path: trunk/changed2
@@ -704,6 +1061,7 @@ Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/changed
 Text-copy-source-md5: ec1bebaea2c042beb68f7679ddd106a4
+Text-copy-source-sha1: 2f6933b5ee0f5fdd823d9717d8729f3c2523811b
 
 
 Node-path: trunk/changed3
@@ -712,8 +1070,10 @@ Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/changed
 Text-copy-source-md5: ec1bebaea2c042beb68f7679ddd106a4
+Text-copy-source-sha1: 2f6933b5ee0f5fdd823d9717d8729f3c2523811b
 Text-content-length: 17
 Text-content-md5: 7d93e8c4d61c2a7b05c20b7d8bf11f83
+Text-content-sha1: d78c3e7f04c44b599787ec534a3193357df1fa37
 Content-length: 17
 
 changed
@@ -727,22 +1087,45 @@ Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/changeddir
 
 
+Node-path: trunk/changedlink2
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 2
+Node-copyfrom-path: trunk/changedlink
+Text-copy-source-md5: d91fb1e1062e62a17f97b44932d454c4
+Text-copy-source-sha1: 8c147187742f58ed0cd8707ddd0c0942fe8b2616
+
+
+Node-path: trunk/changedlink3
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 2
+Node-copyfrom-path: trunk/changedlink
+Text-copy-source-md5: d91fb1e1062e62a17f97b44932d454c4
+Text-copy-source-sha1: 8c147187742f58ed0cd8707ddd0c0942fe8b2616
+Text-content-length: 13
+Text-content-md5: 0ad81e7d7fc35e744e0ad3dea0f158fe
+Text-content-sha1: bae4618ecddda5e6ab6e5fa3b116f5d14dc3464b
+Content-length: 13
+
+link changed3
+
 Revision-number: 10
-Prop-content-length: 136
-Content-length: 136
+Prop-content-length: 140
+Content-length: 140
 
-K 7
-svn:log
-V 34
-copy unchanged stuff from the past
 K 10
 svn:author
-V 7
-pmezard
+V 10
+dschleimer
 K 8
 svn:date
 V 27
-2008-12-05T22:49:02.160163Z
+2014-04-07T22:34:18.298821Z
+K 7
+svn:log
+V 34
+copy unchanged stuff from the past
 PROPS-END
 
 Node-path: trunk/unchanged2
@@ -751,6 +1134,7 @@ Node-action: add
 Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/unchanged
 Text-copy-source-md5: 85ae5b04dd0a666efad8633d142a4635
+Text-copy-source-sha1: c654a5435f170cfad37e136fee9672ecc40afd4a
 
 
 Node-path: trunk/unchangeddir2
@@ -760,22 +1144,31 @@ Node-copyfrom-rev: 2
 Node-copyfrom-path: trunk/unchangeddir
 
 
+Node-path: trunk/unchangedlink2
+Node-kind: file
+Node-action: add
+Node-copyfrom-rev: 2
+Node-copyfrom-path: trunk/unchangedlink
+Text-copy-source-md5: 1aa9c01278c74a273e3117dc42426153
+Text-copy-source-sha1: 3f1a6ab03b820f0baab56c083f77bd9279db2486
+
+
 Revision-number: 11
-Prop-content-length: 129
-Content-length: 129
+Prop-content-length: 133
+Content-length: 133
 
-K 7
-svn:log
-V 27
-copy groupdir from the past
 K 10
 svn:author
-V 7
-pmezard
+V 10
+dschleimer
 K 8
 svn:date
 V 27
-2008-12-05T22:49:04.157303Z
+2014-04-07T22:34:18.370254Z
+K 7
+svn:log
+V 27
+copy groupdir from the past
 PROPS-END
 
 Node-path: trunk/groupdir2