When maven says resolution will not be reattempted until the update interval of MyRepo has elapsed where is that interval specified

Question

With maven  I occasionally hit an artifact that comes from some 3rd-party repo that I haven t built or included in my repository yet    I ll get an error message from the maven client saying that an artifact can t be found      Failure to find org jfrog maven annomojo maven-plugin-anno jar 1 4 0   in http   myrepo 80 artifactory repo was cached in the local   repository  resolution will not be reattempted until the update   interval of MyRepo has elapsed or updates are forced -   Help 1    Now  I understand what this means  and can simply re-run my command with -U  and things usually work fine from there on out     However  I find this error message to be extremely unintuitive and am trying to spare my co-workers some headaches     I am trying to figure out if there is some place that I can modify this update interval setting      Is the update interval that is mentioned in this error message a client-side or server-side setting  If client-side  how do I configure it  If server-side  does anyone know how if Nexus Artifactory expose these settings

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Somewhat relevent   I was getting        ERROR  Failed to execute goal on project testproject  Could not resolve dependencies for project myjarname jar 1 0-0  Failure to find myjarname-core bundle 1 0-0 in http   repo1 maven org maven2 was cached in the local repository  resolution will not be reattempted until the update interval of central has elapsed or updates are forced -   Help 1     This error was caused by accidentally using Maven 3 instead of Maven 2   Just figured it might save someone some time  because my initial google search led me to this page

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you can delete the corresponding failed artifact directory in you local repository  And also you can simply use the -U in the goal  It will do the work  This works with maven 3  So no need to downgrade to maven 2

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According to the settings reference      updatePolicy  This element specifies how often updates should attempt to occur  Maven will compare the local POM   s timestamp  stored   in a repository   s maven-metadata file  to the remote  The choices are    always  daily  default   interval X  where X is an integer in minutes    or never    Example      lt profiles gt       lt profile gt                   lt repositories gt           lt repository gt             lt id gt myRepo lt  id gt             lt name gt My Repository lt  name gt             lt releases gt               lt enabled gt false lt  enabled gt               lt updatePolicy gt always lt  updatePolicy gt               lt checksumPolicy gt warn lt  checksumPolicy gt             lt  releases gt            lt  repository gt         lt  repositories gt                 lt  profile gt     lt  profiles gt         lt  settings gt

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For Intellij users the following worked for me   Right click on your package  Maven  gt  Reimport    and  Maven  gt  Generate Sources and Update Folders

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I had a related problem  but Raghuram s answer helped   I don t have enough reputation yet to vote his answer up    I m using Maven bundled with NetBeans  and was getting the same     was cached in the local repository  resolution will not be reattempted until the update interval of nexus has elapsed or updates are forced -   Help 1   error     To fix this I added  lt updatePolicy gt always lt  updatePolicy gt  to my settings file  C  Program Files NetBeans 7 0 java maven conf settings xml    lt profile gt     lt id gt nexus lt  id gt     lt  --Enable snapshots for the built in central repo to direct -- gt     lt  --all requests to nexus via the mirror -- gt     lt repositories gt       lt repository gt         lt id gt central lt  id gt         lt url gt http   central lt  url gt         lt releases gt  lt enabled gt true lt  enabled gt  lt updatePolicy gt always lt  updatePolicy gt  lt  releases gt         lt snapshots gt  lt enabled gt true lt  enabled gt  lt updatePolicy gt always lt  updatePolicy gt  lt  snapshots gt       lt  repository gt     lt  repositories gt    lt pluginRepositories gt       lt pluginRepository gt         lt id gt central lt  id gt         lt url gt http   central lt  url gt         lt releases gt  lt enabled gt true lt  enabled gt  lt updatePolicy gt always lt  updatePolicy gt  lt  releases gt         lt snapshots gt  lt enabled gt true lt  enabled gt  lt updatePolicy gt always lt  updatePolicy gt  lt  snapshots gt       lt  pluginRepository gt     lt  pluginRepositories gt   lt  profile gt

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I had this problem and the comprehensive descriptions proposed in this helped me to fix it    The second declared problem was my issue  I used a third-party repository which I had just added it do the repository part of the pom file in my project  I add the same repository information into pluginrepository to resolve this problem

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What basically happens is According to default updatePolicy of maven Maven will fetch the jars from repo on daily basis So if during 1st attempt your internet was not working then it would not try to fetch this jar again untill 24hours spent   Resolution    Either use   mvn -U clean install   where -U will force update the repo  or use    lt profiles gt       lt profile gt                   lt repositories gt           lt repository gt             lt id gt myRepo lt  id gt             lt name gt My Repository lt  name gt             lt releases gt               lt enabled gt false lt  enabled gt               lt updatePolicy gt always lt  updatePolicy gt               lt checksumPolicy gt warn lt  checksumPolicy gt             lt  releases gt            lt  repository gt         lt  repositories gt                 lt  profile gt     lt  profiles gt    in your settings xml

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This works after you delete the related dependency from your local maven repository    user  m2 repository path

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If you are using Eclipse then go to Windows -  Preferences -  Maven and uncheck the  Do not automatically update dependencies from remote repositories  checkbox    This works with Maven 3 as well

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Maven has updatePolicy settings for specifying the frequency to check the updates in the repository or to keep the repository in sync with remote    The default value for updatePolicy is daily  Other values can be always   never  XX  specifying interval in minutes      Below code sample can be added to maven user settings file to configure updatePolicy    lt pluginRepositories gt       lt pluginRepository gt           lt id gt Releases lt  id gt           lt url gt http    lt host gt   lt port gt  nexus content repositories releases  lt  url gt           lt releases gt               lt enabled gt true lt  enabled gt               lt updatePolicy gt daily lt  updatePolicy gt           lt  releases gt           lt snapshots gt               lt enabled gt false lt  enabled gt           lt  snapshots gt       lt  pluginRepository gt                lt  pluginRepositories gt

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To finally answer the title question  It is  a client side setting  in  project  profile or settings    plugin   r R epository  releases snapshots  updatePolicy       tag   The  currently  maven  3 6 0  but I suppose  far backwards  compatible  possible values are            Never update locally cached data      public static final String UPDATE POLICY NEVER    never          Always update locally cached data      public static final String UPDATE POLICY ALWAYS    always          Update locally cached data once a day      public static final String UPDATE POLICY DAILY    daily          Update locally cached data   every X minutes   as given by  interval X       public static final String UPDATE POLICY INTERVAL    interval      The current  maven 3 6 0  evaluation of this tag is implemented as follows    public boolean isUpdatedRequired  RepositorySystemSession session  long lastModified  String policy         boolean checkForUpdates      if   policy    null                 policy                 if   RepositoryPolicy UPDATE POLICY ALWAYS equals  policy                   checkForUpdates   true            else if   RepositoryPolicy UPDATE POLICY DAILY equals  policy                   Calendar cal   Calendar getInstance            cal set  Calendar HOUR OF DAY  0            cal set  Calendar MINUTE  0            cal set  Calendar SECOND  0            cal set  Calendar MILLISECOND  0            checkForUpdates   cal getTimeInMillis    gt  lastModified            else if   policy startsWith  RepositoryPolicy UPDATE POLICY INTERVAL                   int minutes   getMinutes  policy            Calendar cal   Calendar getInstance            cal add  Calendar MINUTE  -minutes            checkForUpdates   cal getTimeInMillis    gt  lastModified            else                  assume  never          checkForUpdates   false          if    RepositoryPolicy UPDATE POLICY NEVER equals  policy                           LOGGER warn   Unknown repository update policy       assuming                            policy  RepositoryPolicy UPDATE POLICY NEVER                        return checkForUpdates         with    private int getMinutes  String policy         int minutes      try               String s   policy substring  RepositoryPolicy UPDATE POLICY INTERVAL length     1            minutes   Integer valueOf  s              catch   RuntimeException e                 minutes   24   60          LOGGER warn   Non-parseable repository update policy       assuming     1440                    policy  RepositoryPolicy UPDATE POLICY INTERVAL              return minutes          where lastModified is the  local file   modified timestamp  of an each underlying artifact     In particular for the interval x setting    the colon   is not that strict - any  non-empty  character could do it             negative values x  lt  0 should yield to  never   interval 0 I would assume a  minutely   0-59 secs  or above     interval  number format exceptions result in 24   60 minutes    daily        see  DefaultUpdatePolicyAnalyzer  DefaultMetadataResolver resolveMetadata   and RepositoryPolicy

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I had a similar error with a different artifact        lt      was cached in the local repository  resolution will not be reattempted    until the update interval of central has elapsed or updates are forced   None of the above described solutions worked for me  I finally resolved this in IntelliJ IDEA by  File   Invalidate Caches   Restart       Invalidate and Restart

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You need to delete all   maven repositories  files from your repository

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How I got this problem   When I changed from Eclipse Juno to Luna  and checkout my maven projects from SVN repo  I got the same issues while building the applications    What I tried   I tried clean Local repository and then updating all the versions again using -U option  But my problem continued    Then I went to Window --  Preferences -  Maven --  User Settings --  and clicked on Reindex button under Local Repository and wait for the reindex to happen   That s all  the issue is resolved

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While you can resolve this with a clean install  overriding any cached dependencies  as  Sanjeev-Gulgani suggests with mvn -U clean install  You can also simply remove the cached dependency that is causing the problem with  mvn dependency purge-local-repository -DmanualInclude  groupId artifactId    See mvn docs for more info

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I used to solve this issue by deleting the corresponding failed to download artifact directory in my local repo  Next time I run the maven command the artifact download is triggered again  Therefore I d say it s a client side setting   Nexus side  server repo side   this issue is solved configuring a scheduled task   Client side  this is done using -U  as you already pointed out

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This error can sometimes be misleading  2 things you might want to check    Is there an actual JAR for the dependency in the repo  Your error message contains a URL of where it is searching  so go there  and then browse to the folder that matches your dependency  Is there a jar  If not  you need to change your dependency   for example  you could be pointing at a top level parent dependency  when you should be pointing at a sub project  If the jar exists on the remote repo  then just delete your local copy  It will be in your home directory  unless you configured differently  under  m2 repository  ls -a to show hidden if on Linux

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In my case the solution was stupid  I just had incorrect dependency versions

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If you use Nexus as a proxy repo  it has  Not Found Cache TTL  setting with default value 1440 minutes  or 24 hours   Lowering this value may help  Repositories   Configuration   Expiration Settings    See documentation for more info

[maven] When maven says "resolution will not be reattempted until the update interval of MyRepo has elapsed", where is that interval specified?

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