Created JIRA: https://issues.apache.org/jira/browse/HAWQ-1560
Submitted pull request: https://github.com/apache/incubator-hawq/pull/1318 - Kyle On Fri, Dec 1, 2017 at 4:47 PM, Kyle Roberts <[email protected]> wrote: > Hi everyone, > > I will be creating a JIRA and submitting a pull request for this. > > Thanks, > > - Kyle > > On Thu, Nov 30, 2017 at 10:52 PM, 刘奎恩(局外) <[email protected]> > wrote: > >> >> It makes sense to adjust its LOG level to reduce log size on master. >> 1. It affects master performance if log file size is >> huge.Query on hawq_toolkit.hawq_log_master_concise is slower >> as time going. >> https://issues.apache.org/jira/projects/HAWQ/issues/HAWQ-1550 >> 2. It has little value when segments are seperated from storage nodes.If >> storage nodes and computing nodes are geographically distributed,it is >> common on Cloud service, and no distributed cache systems are >> available,then we have little interest to keep them in log in such cases. >> >> data locality ratio >> -------------—— >> Kuien Liu/奎恩 >> ------------------------------------------------------------------发件人：Kyle >> Roberts <[email protected]>发送时间：2017年12月1日(星期五) 05:41收件人：dev < >> [email protected]>主 题：Default LOG level for "data locality >> ratio:" events contribute to Hawq Master log bloat >> Issue: >> >> >> Default LOG level for "data locality ratio:" events contribute to Hawq >> Master log bloat. Should only be needed when investigating/tuning >> performance. >> >> Case Scenario: >> >> *"data locality ratio:"* events can report multiple times and, depending >> upon the query, many times. >> >> >> Sample event: >> >> >> 2017-11-30 20:33:39.857251 >> GMT,"gpadmin","testdb",p280349,th-909919968,"[local]",,2017-11-30 20 >> :06:35 >> GMT,1630750,con25419,cmd28,seg-1,,,,sx2,"LOG","00000","data >> locality ratio: >> 1.000; virtual segment number: 1; different host number: 1; >> virtual segment >> number per host(avg/min/max): (1/1/1); segment size(avg/min/ >> max): (1016.000 >> B/1016 B/1016 B); segment size with penalty(avg/min/max): (1 >> 016.000 B/1016 >> B/1016 B); continuity(avg/min/max): (1.000/1.000/1.000).",,,,,"SQL >> statement ""select count(*)::float4 from public.test_tbl as >> Ta where Ta.id >> is null""","analyze test_tbl;",0,,"cdbdatalocality.c",3372, >> >> >> >> For example, Hawq master logs are seen with close to *20% of >> the file size* >> is from only the *"data locality ratio:" *events. >> >> >> Product Enhancement suggestion: >> >> >> Because these are only needed for performance tuning (or for >> investigation): >> >> >> In: >> >> >> https://github.com/apache/incubator-hawq/blob/master/src/bac >> kend/cdb/cdbdatalocality.c#L3372 >> >> >> Could we change default LOG level to something like DEBUG1, etc? >> >> >> >> >> - Kyle >> > > > > -- > Kyle Roberts | Staff Customer Engineer | 650-846-1667 > <(650)%20846-1667> > Support.Pivotal.io > <http://www.google.com/url?q=http%3A%2F%2Fsupport.pivotal.io%2F&sa=D&sntz=1&usg=AFQjCNGDBr_XSKC18wot5h3OkKoZ84Vn7Q> > | Mon-Fri 9:00am to 5:00pm PST | 1-877-477-2269 <(877)%20477-2269> > [image: support] > <https://www.google.com/url?q=https%3A%2F%2Fsupport.pivotal.io%2F&sa=D&sntz=1&usg=AFQjCNEvwKLjzu29inKwy4jJjKsboqGMCg> > [image: twitter] > <https://www.google.com/url?q=https%3A%2F%2Ftwitter.com%2Fpivotal&sa=D&sntz=1&usg=AFQjCNG1FcqkH5ghKsSG6UkdeUzjSuDSHg> > [image: linkedin] > <https://www.google.com/url?q=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F3048967&sa=D&sntz=1&usg=AFQjCNHOQGYmDYIQz06S3-vAuqzf8bN8Yw> > [image: facebook] > <https://www.google.com/url?q=https%3A%2F%2Fwww.facebook.com%2Fpivotalsoftware&sa=D&sntz=1&usg=AFQjCNFQnPFtec1Rp3lKf6MuY1jcbA8j2A> > [image: google plus] <https://plus.google.com/+Pivotal> [image: youtube] > <https://www.youtube.com/playlist?list=PLAdzTan_eSPScpj2J50ErtzR9ANSzv3kl> > -- Kyle Roberts | Staff Customer Engineer | 650-846-1667 Support.Pivotal.io <http://www.google.com/url?q=http%3A%2F%2Fsupport.pivotal.io%2F&sa=D&sntz=1&usg=AFQjCNGDBr_XSKC18wot5h3OkKoZ84Vn7Q> | Mon-Fri 9:00am to 5:00pm PST | 1-877-477-2269 [image: support] <https://www.google.com/url?q=https%3A%2F%2Fsupport.pivotal.io%2F&sa=D&sntz=1&usg=AFQjCNEvwKLjzu29inKwy4jJjKsboqGMCg> [image: twitter] <https://www.google.com/url?q=https%3A%2F%2Ftwitter.com%2Fpivotal&sa=D&sntz=1&usg=AFQjCNG1FcqkH5ghKsSG6UkdeUzjSuDSHg> [image: linkedin] <https://www.google.com/url?q=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F3048967&sa=D&sntz=1&usg=AFQjCNHOQGYmDYIQz06S3-vAuqzf8bN8Yw> [image: facebook] <https://www.google.com/url?q=https%3A%2F%2Fwww.facebook.com%2Fpivotalsoftware&sa=D&sntz=1&usg=AFQjCNFQnPFtec1Rp3lKf6MuY1jcbA8j2A> [image: google plus] <https://plus.google.com/+Pivotal> [image: youtube] <https://www.youtube.com/playlist?list=PLAdzTan_eSPScpj2J50ErtzR9ANSzv3kl>
