Why these 2 items in the same entry for a htable - sr-users

4 Apr 2017


      Hi,
While working on the project to migrate my kamailio.cfg script from kamailio
3.3.1 to 5.0.x, I discovered that in there are 2 items in the same htable.
Below the figure that illustrate this case :
1)      Content of the MBXRANGE table :
mysql> select * from mbxrange;
+-----+-------------+-------------------------------------------------+-----
-------+----------+
| id  | key_name    | key_value                                       |
value_type | key_type |
+-----+-------------+-------------------------------------------------+-----
-------+----------+
|   0 | VERSION     | 120104-173400                                   |
0 |        0 |
| 101 | 1           | min=0100000000;max=0199999999;node=OPMVTS1VSE02 |
0 |        0 |
| 102 | 2           | min=0200000000;max=0299999999;node=OPMVTS1VSE02 |
0 |        0 |
| 103 | 3           | min=0300000000;max=0399999999;node=OPMVTS1VSE02 |
0 |        0 |
| 104 | 4           | min=0400000000;max=0499999999;node=OPMVTS1VSE02 |
0 |        0 |
| 105 | 5           | min=0500000000;max=0599999999;node=OPMVTS1VSE02 |
0 |        0 |
| 106 | 6           | min=0600000000;max=0699999999;node=OPMVTS1VSE02 |
0 |        0 |
| 107 | 7           | min=0700000000;max=0799999999;node=OPMVTS1VSE02 |
0 |        0 |
| 108 | 8           | min=0800000000;max=0899999999;node=OPMVTS1VSE02 |
0 |        0 |
| 109 | 9           | min=0900000000;max=0999999999;node=OPMVTS1VSE02 |
0 |        0 |
| 199 | maxmbxrange | 9                                               |
0 |        0 |
+-----+-------------+-------------------------------------------------+-----
-------+----------+
11 rows in set (0.00 sec)
2)      modparam instruction used in my kamailio.cfg script:
modparam("htable", "htable", "mbxrangeHash=>size=4;dbtable=mbxrange;")
3)      Result of < kamctl fifo sht_dump mbxrangeHash > command with
kamailio version 3.3.x:
[root@op52is4router1 ~]# kamctl fifo sht_dump mbxrangeHash
Entry:: 0
6:: min=0600000000;max=0699999999;node=OPMVTS1VSE02
Entry:: 1
7:: min=0700000000;max=0799999999;node=OPMVTS1VSE02
Entry:: 2
4:: min=0400000000;max=0499999999;node=OPMVTS1VSE02
Entry:: 3
5:: min=0500000000;max=0599999999;node=OPMVTS1VSE02
Entry:: 4
2:: min=0200000000;max=0299999999;node=OPMVTS1VSE02
Entry:: 5
3:: min=0300000000;max=0399999999;node=OPMVTS1VSE02
VERSION:: 120104-173400
Entry:: 6
maxmbxrange:: 9
Entry:: 7
1:: min=0100000000;max=0199999999;node=OPMVTS1VSE02
Entry:: 14
9:: min=0900000000;max=0999999999;node=OPMVTS1VSE02
Entry:: 15
8:: min=0800000000;max=0899999999;node=OPMVTS1VSE02
Result of < kamcmd htable.dump mbxrangeHash > command with kamailio version
5.0.x :
[root@vm-vse02-siprouter1 ~]# kamcmd htable.dump mbxrangeHash
{
entry: 0
size: 1
slot: {
item: {
name: 6
value:
min=0600000000;max=0699999999;node=OPMMMS1VSE02
type: str
}
}
}
{
entry: 1
size: 1
slot: {
item: {
name: 7
value:
min=0700000000;max=0799999999;node=OPMMMS1VSE02
type: str
}
}
}
{
entry: 2
size: 1
slot: {
item: {
name: 4
value:
min=0400000000;max=0499999999;node=OPMMMS1VSE02
type: str
}
}
}
{
entry: 3
size: 1
slot: {
item: {
name: 5
value:
min=0500000000;max=0599999999;node=OPMMMS1VSE02
type: str
}
}
}
{
entry: 4
size: 1
slot: {
item: {
name: 2
value:
min=0200000000;max=0299999999;node=OPMMMS1VSE02
type: str
}
}
}
{
entry: 5
size: 2
slot: {
item: {
name: 3
value:
min=0300000000;max=0399999999;node=OPMMMS1VSE02
type: str
}
item: {
name: VERSION
value: 120104-173400
type: str
}
}
}
{
entry: 6
size: 1
slot: {
item: {
name: maxmbxrange
value: 9
type: str
}
}
}
{
entry: 7
size: 1
slot: {
item: {
name: 1
value:
min=0100000000;max=0199999999;node=OPMMMS1VSE02
type: str
}
}
}
{
entry: 14
size: 1
slot: {
item: {
name: 9
value:
min=0900000000;max=0999999999;node=OPMMMS1VSE02
type: str
}
}
}
{
entry: 15
size: 1
slot: {
item: {
name: 8
value:
min=0800000000;max=0899999999;node=OPMMMS1VSE02
type: str
}
}
}
So, I can see :
-          The entry number is not incremental 1 by 1 ; there are entry #1
to #7, then #14 and #15 (all have size=1)
-          For the entry #5, its size is of 2 and it contains 2 items
I don't say here that this is a problem, but the way the htable is loaded
seems strange to me.
So if there people who can explain me if what I see is normal or not, and
how the htable load process works, I would appreciate.
Thanks in advance.
Cordialement
Patrick GINHOUX