MINOR: stick-table: show the shard number in each entry's "show table" output
Stick-tables support sharding to multiple peers but there was no way to
know to what shard an entry was going to be sent. Let's display this in
the "show table" output to ease debugging.
diff --git a/doc/management.txt b/doc/management.txt
index dc60d4c..d68c124 100644
--- a/doc/management.txt
+++ b/doc/management.txt
@@ -3544,6 +3544,16 @@
| fgrep 'key=' | cut -d' ' -f2 | cut -d= -f2 > abusers-ip.txt
( or | awk '/key/{ print a[split($2,a,"=")]; }' )
+ When the stick-table is synchronized to a peers section supporting sharding,
+ the shard number will be displayed for each key (otherwise '0' is reported).
+ This allows to know which peers will receive this key.
+ Example:
+ $ echo "show table http_proxy" | socat stdio /tmp/sock1 | fgrep shard=
+ 0x7f23b0c822a8: key=10.0.0.2 use=0 exp=296398 shard=9 gpc0=0
+ 0x7f23a063f948: key=10.0.0.6 use=0 exp=296075 shard=12 gpc0=0
+ 0x7f23b03920b8: key=10.0.0.8 use=0 exp=296766 shard=1 gpc0=0
+ 0x7f23a43c09e8: key=10.0.0.12 use=0 exp=295368 shard=8 gpc0=0
+
show tasks
Dumps the number of tasks currently in the run queue, with the number of
occurrences for each function, and their average latency when it's known
diff --git a/src/stick_table.c b/src/stick_table.c
index 57c8c15..3ca2c88 100644
--- a/src/stick_table.c
+++ b/src/stick_table.c
@@ -4456,7 +4456,7 @@
dump_binary(msg, (const char *)entry->key.key, t->key_size);
}
- chunk_appendf(msg, " use=%d exp=%d", entry->ref_cnt - 1, tick_remain(now_ms, entry->expire));
+ chunk_appendf(msg, " use=%d exp=%d shard=%d", entry->ref_cnt - 1, tick_remain(now_ms, entry->expire), entry->shard);
for (dt = 0; dt < STKTABLE_DATA_TYPES; dt++) {
void *ptr;