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Posted to issues@kylin.apache.org by "Temple Zhou (JIRA)" <ji...@apache.org> on 2019/07/05 08:42:00 UTC
[jira] [Updated] (KYLIN-4074) Exception in thread "Memcached IO
over {MemcachedConnection to ..." java.lang.NullPointerException
[ https://issues.apache.org/jira/browse/KYLIN-4074?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Temple Zhou updated KYLIN-4074:
-------------------------------
Description:
This exception will lead to the failure of thread "Memcached IO over {MemcachedConnection to ...}",
so, the inputQueue of memcache client will be blocked, and every request will take 2000ms (timeout).
The log is as follows:
{code:java}
2019-07-01 15:21:24,039 INFO [Query 3f75c477-9c38-35bf-24a0-656459d9ebb1-212641] v2.CubeHBaseEndpointRPC:197 : Query-3f75c477-9c38-35bf-24a0-656459d9ebb1: no segment result is cached for segment:1102_pv_uv_users_di[20160701000000_20170101000000], take time:2000ms
{code}
was:
This exception will lead to the failure of thread "Memcached IO over {MemcachedConnection to ...}",
so, the inputQueue of memcache client will be blocked, and every request will take 2000ms (timeout).
The log is as follows:
{code:log}
2019-07-01 15:21:24,039 INFO [Query 3f75c477-9c38-35bf-24a0-656459d9ebb1-212641] v2.CubeHBaseEndpointRPC:197 : Query-3f75c477-9c38-35bf-24a0-656459d9ebb1: no segment result is cached for segment:1102_pv_uv_users_di[20160701000000_20170101000000], take time:2000ms
{code}
> Exception in thread "Memcached IO over {MemcachedConnection to ..." java.lang.NullPointerException
> --------------------------------------------------------------------------------------------------
>
> Key: KYLIN-4074
> URL: https://issues.apache.org/jira/browse/KYLIN-4074
> Project: Kylin
> Issue Type: Bug
> Affects Versions: v2.4.0, v2.5.0, v2.6.2
> Reporter: Temple Zhou
> Assignee: Temple Zhou
> Priority: Major
>
> This exception will lead to the failure of thread "Memcached IO over {MemcachedConnection to ...}",
> so, the inputQueue of memcache client will be blocked, and every request will take 2000ms (timeout).
> The log is as follows:
> {code:java}
> 2019-07-01 15:21:24,039 INFO [Query 3f75c477-9c38-35bf-24a0-656459d9ebb1-212641] v2.CubeHBaseEndpointRPC:197 : Query-3f75c477-9c38-35bf-24a0-656459d9ebb1: no segment result is cached for segment:1102_pv_uv_users_di[20160701000000_20170101000000], take time:2000ms
> {code}
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