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https://issues.apache.org/jira/browse/TS-852?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leif Hedstrom updated TS-852:
-----------------------------
Fix Version/s: (was: 6.2.0)
sometime
> hostdb and dns system hangup
> ----------------------------
>
> Key: TS-852
> URL: https://issues.apache.org/jira/browse/TS-852
> Project: Traffic Server
> Issue Type: Bug
> Components: Core, DNS
> Affects Versions: 3.1.0
> Reporter: Zhao Yongming
> Assignee: Alan M. Carroll
> Priority: Minor
> Labels: dns, hostdb
> Fix For: 3.1.0, sometime
>
> Attachments: TS-852.patch
>
>
> in my testing, all request that need go OS, fails with 30s timeout, and the
> slow query shows data from dns missed:
> {code}
> [Jun 22 15:33:47.183] Server {1106880832} ERROR: [8122411] Slow Request: url:
> http://download.im.alisoft.com/aliim/AliIM6/update/packages//2011-5-4-10-10-40/0/modulesproxy/8203.xml.wwzip
> status: 0 unique id: bytes: 0 fd: 0 client state: 6 server state: 0
> ua_begin: 0.000 ua_read_header_done: 0.000 cache_open_read_begin: 0.000
> cache_open_read_end: 0.000 dns_lookup_begin: 0.000 dns_lookup_end: -1.000
> server_connect: -1.000 server_first_read: -1.000 server_read_header_done:
> -1.000 server_close: -1.000 ua_close: 30.667 sm_finish: 30.667
> [Jun 22 15:33:47.220] Server {1099663680} ERROR: [8122422] Slow Request: url:
> http://img.uu1001.cn/materials/original/2010-11-22/22-48/a302876929a9c40a8272ac439a16ad25e74edf71.png
> status: 0 unique id: bytes: 0 fd: 0 client state: 6 server state: 0
> ua_begin: 0.000 ua_read_header_done: 0.000 cache_open_read_begin: 0.000
> cache_open_read_end: 0.000 dns_lookup_begin: 0.000 dns_lookup_end: -1.000
> server_connect: -1.000 server_first_read: -1.000 server_read_header_done:
> -1.000 server_close: -1.000 ua_close: 30.318 sm_finish: 30.318
> [Jun 22 15:33:47.441] Server {1098611008} ERROR: [8122421] Slow Request: url:
> http://img02.taobaocdn.com/bao/uploaded/i2/T1mp8QXopdXXblNIZ6_061203.jpg_b.jpg
> status: 0 unique id: bytes: 0 fd: 0 client state: 6 server state: 0
> ua_begin: 0.000 ua_read_header_done: 0.000 cache_open_read_begin: 0.000
> cache_open_read_end: 0.000 dns_lookup_begin: 0.000 dns_lookup_end: -1.000
> server_connect: -1.000 server_first_read: -1.000 server_read_header_done:
> -1.000 server_close: -1.000 ua_close: 30.597 sm_finish: 30.597
> [Jun 22 15:33:47.441] Server {1098611008} ERROR: [8122409] Slow Request: url:
> http://img04.taobaocdn.com/tps/i4/T1EM9gXlttXXXXXXXX-440-135.jpg status: 0
> unique id: bytes: 0 fd: 0 client state: 6 server state: 0 ua_begin: 0.000
> ua_read_header_done: 0.000 cache_open_read_begin: 0.000 cache_open_read_end:
> 0.000 dns_lookup_begin: 0.000 dns_lookup_end: -1.000 server_connect: -1.000
> server_first_read: -1.000 server_read_header_done: -1.000 server_close:
> -1.000 ua_close: 30.948 sm_finish: 30.948
> {code}
> all http SM show from {http} in DNS_LOOKUP
> and traffic.out show nothing with error, when I enable debug on
> hostdb.*|dns.*:
> {code}
> [Jun 22 15:27:42.391] Server {1108986176} DEBUG: (hostdb) probe
> img03.taobaocdn.com DB357D60B8247DC7 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.391] Server {1108986176} DEBUG: (hostdb) timeout 64204
> 1308663404 300
> [Jun 22 15:27:42.391] Server {1108986176} DEBUG: (hostdb) delaying force 0
> answer for img03.taobaocdn.com [timeout 0]
> [Jun 22 15:27:42.411] Server {1108986176} DEBUG: (hostdb) probe
> img03.taobaocdn.com DB357D60B8247DC7 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.411] Server {1108986176} DEBUG: (hostdb) timeout 64204
> 1308663404 300
> [Jun 22 15:27:42.411] Server {1108986176} DEBUG: (hostdb) DNS
> img03.taobaocdn.com
> [Jun 22 15:27:42.411] Server {1108986176} DEBUG: (hostdb) enqueuing
> additional request
> [Jun 22 15:27:42.416] Server {47177168876656} DEBUG: (hostdb) probe 127.0.0.1
> E9B7563422C93608 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.416] Server {47177168876656} DEBUG: (hostdb) immediate
> answer for 127.0.0.1
> [Jun 22 15:27:42.422] Server {1098611008} DEBUG: (hostdb) probe
> img08.taobaocdn.com 945198AE9AE37481 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.422] Server {1098611008} DEBUG: (hostdb) timeout 64281
> 1308663327 300
> [Jun 22 15:27:42.422] Server {1098611008} DEBUG: (hostdb) delaying force 0
> answer for img08.taobaocdn.com [timeout 0]
> [Jun 22 15:27:42.441] Server {1098611008} DEBUG: (hostdb) probe
> img08.taobaocdn.com 945198AE9AE37481 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.441] Server {1098611008} DEBUG: (hostdb) timeout 64281
> 1308663327 300
> [Jun 22 15:27:42.441] Server {1098611008} DEBUG: (hostdb) DNS
> img08.taobaocdn.com
> [Jun 22 15:27:42.441] Server {1098611008} DEBUG: (hostdb) enqueuing
> additional request
> [Jun 22 15:27:42.470] Server {1099663680} DEBUG: (hostdb) probe 127.0.0.1
> E9B7563422C93608 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.470] Server {1099663680} DEBUG: (hostdb) immediate answer
> for 127.0.0.1
> [Jun 22 15:27:42.490] Server {1106880832} DEBUG: (hostdb) probe 127.0.0.1
> E9B7563422C93608 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.490] Server {1106880832} DEBUG: (hostdb) immediate answer
> for 127.0.0.1
> [Jun 22 15:27:42.594] Server {1108986176} DEBUG: (hostdb) probe 127.0.0.1
> E9B7563422C93608 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.594] Server {1108986176} DEBUG: (hostdb) immediate answer
> for 127.0.0.1
> [Jun 22 15:27:42.818] Server {1108986176} DEBUG: (hostdb) probe 127.0.0.1
> E9B7563422C93608 1 [ignore_timeout = 0]
> [Jun 22 15:27:42.818] Server {1108986176} DEBUG: (hostdb) immediate answer
> for 127.0.0.1
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) dequeuing
> additional request
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) probe
> img.taobao.com 55D857190294CA66 1 [ignore_timeout = 0]
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) timeout 64134
> 1308663475 300
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) DNS img.taobao.com
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (dns) received query
> img.taobao.com type = 1, timeout = 0
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (dns) enqueing query
> img.taobao.com
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (dns) adding first to
> collapsing queue
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) probe
> img.taobao.com 55D857190294CA66 1 [ignore_timeout = 0]
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) timeout 64134
> 1308663475 300
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) DNS img.taobao.com
> [Jun 22 15:27:43.014] Server {1099663680} DEBUG: (hostdb) enqueuing
> additional request
> {code}
> this is a critical fail for me!
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