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oknet pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/trafficserver.git
The following commit(s) were added to refs/heads/master by this push:
new a7a24cc fix 3939 collision
a7a24cc is described below
commit a7a24cce324740609fdfcfa5aaee8f5504521294
Author: chenggang7 <[email protected]>
AuthorDate: Thu Apr 25 10:44:58 2019 +0800
fix 3939 collision
---
iocore/cache/CacheWrite.cc | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/iocore/cache/CacheWrite.cc b/iocore/cache/CacheWrite.cc
index 55ec3eb..59c101c 100644
--- a/iocore/cache/CacheWrite.cc
+++ b/iocore/cache/CacheWrite.cc
@@ -780,7 +780,13 @@ agg_copy(char *p, CacheVC *vc)
if (doc->data_len() || vc->f.allow_empty_doc) {
doc->key = vc->earliest_key;
} else { // the vector is being written by itself
- prev_CacheKey(&doc->key, &vc->earliest_key);
+ if (vc->earliest_key == zero_key) {
+ do {
+ rand_CacheKey(&doc->key, vc->vol->mutex);
+ } while (DIR_MASK_TAG(doc->key.slice32(2)) ==
DIR_MASK_TAG(vc->first_key.slice32(2)));
+ } else {
+ prev_CacheKey(&doc->key, &vc->earliest_key);
+ }
}
dir_set_head(&vc->dir, true);
} else {
