Re: [basex-talk] Consistent NPE loading content on one server, other server works

24 Jan 2024


      I will test forthwith.
Cheers,
E.
_____________________________________________
Eliot Kimber
Sr Staff Content Engineer
O: 512 554 9368
M: 512 554 9368
servicenow.comhttps://www.servicenow.com
LinkedInhttps://www.linkedin.com/company/servicenow | Twitterhttps://twitter.com/servicenow | YouTubehttps://www.youtube.com/user/servicenowinc | Facebookhttps://www.facebook.com/servicenow
From: Christian Grün christian.gruen@gmail.com
Date: Wednesday, January 24, 2024 at 9:27 AM
To: Eliot Kimber eliot.kimber@servicenow.com
Cc: basex-talk@mailman.uni-konstanz.de basex-talk@mailman.uni-konstanz.de
Subject: Re: [basex-talk] Consistent NPE loading content on one server, other server works
[External Email]
________________________________
…spending much time on a problem rarely helps. It’s often better to write an e-mail, and discover the solution right after that.
A new stable snapshot with the bug fix is online [1,2].
Cheers,
Christian
[1] https://github.com/BaseXdb/basex/issues/2272
[2] https://files.basex.org/releases/latest/https://files.basex.org/releases/latest/
On Wed, Jan 24, 2024 at 4:14 PM Christian Grün <christian.gruen@gmail.commailto:christian.gruen@gmail.com> wrote:
Hi Eliot,
Thanks for your observations, and some first debugging.
The idmap file is only created and required if UPDINDEX is enabled. Well, let’s say it should: Maybe this file is not created in due time.
I haven’t managed to reproduce the bug yet. If you are more successful, please let us know.
Cheers,
Christian
On Wed, Jan 24, 2024 at 12:22 AM Eliot Kimber <eliot.kimber@servicenow.commailto:eliot.kimber@servicenow.com> wrote:
I found the proximate cause: Not having UPDINDEX set to true() on the failing server.
When I set UPDINDEX to true on the target database, then the load succeeded.
Tracking through the Java code it looks like a failure to initialize the idmap member of the DiskData object. This code looks like it could be the issue:
// open data and indexes
init();
if(meta.updindex) {
  idmap = new IdPreMap(meta.dbFile(DATAIDP));
  if(meta.textindex) textIndex = new UpdatableDiskValues(this, IndexType.TEXT);
  if(meta.attrindex) attrIndex = new UpdatableDiskValues(this, IndexType.ATTRIBUTE);
  if(meta.tokenindex) tokenIndex = new UpdatableDiskValues(this, IndexType.TOKEN);
} else {
  if(meta.textindex) textIndex = new DiskValues(this, IndexType.TEXT);
  if(meta.attrindex) attrIndex = new DiskValues(this, IndexType.ATTRIBUTE);
  if(meta.tokenindex) tokenIndex = new DiskValues(this, IndexType.TOKEN);
}
if(meta.ftindex) ftIndex = new FTIndex(this);
The idmap is only set of meta.updIndex is true.
Cheers,
E.
_____________________________________________
Eliot Kimber
Sr Staff Content Engineer
O: 512 554 9368
M: 512 554 9368
servicenow.comhttps://www.servicenow.com
LinkedInhttps://www.linkedin.com/company/servicenow | Twitterhttps://twitter.com/servicenow | YouTubehttps://www.youtube.com/user/servicenowinc | Facebookhttps://www.facebook.com/servicenow
From: Eliot Kimber <eliot.kimber@servicenow.commailto:eliot.kimber@servicenow.com>
Date: Tuesday, January 23, 2024 at 11:51 AM
To: basex-talk@mailman.uni-konstanz.demailto:basex-talk@mailman.uni-konstanz.de <basex-talk@mailman.uni-konstanz.demailto:basex-talk@mailman.uni-konstanz.de>
Subject: Consistent NPE loading content on one server, other server works
I have two servers running the same code, both on 10.7. I have a REST API handler that takes data as input and stores it in a database, applying some preprocessing to the data first.
The data successfully loads on my dev server and consistently fails on the production server, with this Java failure:
[INFO] Posting "/Users/eliot.kimber/git-basex/product-content-analytics/analytics/adobe/adobe-analytics-Utah_Pages_Viewed_Aug2023-clean.csv"
[INFO]   as filename "adobe-analytics-Utah_Pages_Viewed_Aug2023-clean.csv"
[INFO]   to Mirabel server "http://mirabel.corp.service-now.com:9984"...
Unexpected error: Improper use? Potential bug? Your feedback is welcome:
Contact: basex-talk@mailman.uni-konstanz.demailto:basex-talk@mailman.uni-konstanz.de
Version: BaseX 10.7
Java: Oracle Corporation, 17.0.8
OS: Linux, amd64
Stack Trace:
java.lang.NullPointerException: Cannot invoke "org.basex.index.IdPreMap.write(org.basex.io.IOFile)" because "this.idmap" is null
                at org.basex.data.DiskData.write(DiskData.java:151)
                at org.basex.data.DiskData.close(DiskData.java:160)
                at org.basex.core.Datas.unpin(Datas.java:52)
                at org.basex.core.cmd.Close.close(Close.java:45)
                at org.basex.core.cmd.OptimizeAll.optimizeAll(OptimizeAll.java:124)
                at org.basex.query.up.primitives.db.DBOptimize.apply(DBOptimize.java:119)
                at org.basex.query.up.DataUpdates.applyDbUpdates(DataUpdates.java:213)
                at org.basex.query.up.DataUpdates.apply(DataUpdates.java:172)
                at org.basex.query.up.ContextModifier.apply(ContextModifier.java:120)
                at org.basex.query.up.Updates.apply(Updates.java:179)
                at org.basex.query.QueryContext.update(QueryContext.java:663)
                at org.basex.query.QueryContext.lambda$iter$4(QueryContext.java:357)
                at org.basex.query.QueryContext.run(QueryContext.java:766)
                at org.basex.query.QueryContext.iter(QueryContext.java:357)
                at org.basex.http.restxq.RestXqResponse.serialize(RestXqResponse.java:78)
                at org.basex.http.web.WebResponse.create(WebResponse.java:58)
                at org.basex.http.restxq.RestXqServlet.run(RestXqServlet.java:72)
                at org.basex.http.BaseXServlet.service(BaseXServlet.java:69)
                at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
                at org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1459)
                at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:799)
                at org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1656)
                at org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:319)
                at org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:273)
                at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201)
                at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1626)
                at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:552)
                at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
                at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:600)
                at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
                at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
                at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
                at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
                at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1440)
                at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
                at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:505)
                at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
                at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
                at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1355)
                at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
                at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
                at org.eclipse.jetty.server.Server.handle(Server.java:516)
                at org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:487)
                at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:732)
                at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:479)
                at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:277)
                at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
                at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
                at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
                at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:883)
                at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:1034)
                at java.base/java.lang.Thread.run(Thread.java:833)[INFO] Data loaded.
The two servers are essentially identical Linux servers, although the production server has more resources.
Any idea what might cause this failure or what I can do to diagnose it?
There must be some non-obvious difference in these two servers but I don’t know what to look for.
The code doing the load to a database is:
let $reportPath as xs:string :=
        ``[/`{$analyticsmgmt:csvPathRoot}`/`{$source}`/`{$reportType}`/`{$reportName}`.xml]``
    let $msg := prof:dump(``[[INFO] Storing analytics report "`{$reportPath}`"]``)
    let $csv := $csv transform with { insert node attribute {'timestamp'} {$timeStampStr} into ./* }
    let $csv := $csv transform with { analyticsmgmt:dispatchAnalysticsStorePreProcessing($reportName, ., $debug) }
    return
    try {
      (db:put($analyticsDb, $csv, $reportPath),
       db:optimize($analyticsDb,
       true(),
         map{
           'attrindex' : true(),
           'tokenindex' : true(),
           'updindex' : true()
         })
      )
    } catch * {
      util:logToConsole(
        'analyticsmgmt:storeAnalyticsCsvReport',
        ``[`{$err:code}`: `{$err:description}`]``,
        'error'
      )
    }
Thanks,
Eliot
_____________________________________________
Eliot Kimber
Sr Staff Content Engineer
O: 512 554 9368
M: 512 554 9368
servicenow.comhttps://www.servicenow.com
LinkedInhttps://www.linkedin.com/company/servicenow | Twitterhttps://twitter.com/servicenow | YouTubehttps://www.youtube.com/user/servicenowinc | Facebookhttps://www.facebook.com/servicenow

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

Re: [basex-talk] Consistent NPE loading content on one server, other server works