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# troubleshooting
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druid-overlord-1 druid-overlord 2022-11-29T03:00:12,941 WARN [qtp475249993-453] org.eclipse.jetty.server.HttpChannel - /druid/indexer/v1/leader
druid-overlord-1 druid-overlord org.apache.druid.java.util.common.IAE: No userMap is available for authenticator with prefix: [basicAuthAuthenticator]
druid-overlord-1 druid-overlord 	at org.apache.druid.security.basic.authentication.validator.MetadataStoreCredentialsValidator.validateCredentials(MetadataStoreCredentialsValidator.java:64) ~[?:?]
druid-overlord-1 druid-overlord 	at org.apache.druid.security.basic.authentication.BasicHTTPAuthenticator$BasicHTTPAuthenticationFilter.doFilter(BasicHTTPAuthenticator.java:200) ~[?:?]
druid-overlord-1 druid-overlord 	at org.apache.druid.server.security.AuthenticationWrappingFilter.doFilter(AuthenticationWrappingFilter.java:59) ~[druid-server-0.23.0.jar:0.23.0]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193) ~[jetty-servlet-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601) ~[jetty-servlet-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.apache.druid.server.security.SecuritySanityCheckFilter.doFilter(SecuritySanityCheckFilter.java:77) ~[druid-server-0.23.0.jar:0.23.0]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193) ~[jetty-servlet-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601) ~[jetty-servlet-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548) ~[jetty-servlet-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) ~[jetty-server-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624) ~[jetty-server-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233) ~[jetty-server-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435) ~[jetty-server-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188) ~[jetty-server-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501) ~[jetty-servlet-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594) ~[jetty-server-9.4.40.v20210413.jar:9.4.40.v20210413]
druid-overlord-1 druid-overlord 	at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186) ~[jetty-server-9.4.40.v20210413.jar:9.4.40.v20210413]
and
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druid-overlord-1 druid-overlord 2022-11-29T03:00:15,123 WARN [CoordinatorPollingBasicAuthorizerCacheManager-Exec--0] org.apache.druid.java.util.common.RetryUtils - Retrying (7 of 9) in 53,797ms.
druid-overlord-1 druid-overlord com.fasterxml.jackson.core.JsonParseException: Input does not start with Smile format header (first byte = 0x3c) and parser has REQUIRE_HEADER enabled: can not parse
druid-overlord-1 druid-overlord  at [Source: (byte[])"<html>
druid-overlord-1 druid-overlord <head>
druid-overlord-1 druid-overlord <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
druid-overlord-1 druid-overlord <title>Error 401 User authentication failed.</title>
druid-overlord-1 druid-overlord </head>
druid-overlord-1 druid-overlord <body><h2>HTTP ERROR 401 User authentication failed.</h2>
druid-overlord-1 druid-overlord <table>
druid-overlord-1 druid-overlord <tr><th>URI:</th><td>/druid-ext/basic-security/authorization/db/basicAuthAuthorizer/cachedSerializedGroupMappingMap</td></tr>
druid-overlord-1 druid-overlord <tr><th>STATUS:</th><td>401</td></tr>
druid-overlord-1 druid-overlord <tr><th>MESSAGE:</th><td>User authentication failed.</td></tr>
druid-overlord-1 druid-overlord <tr><th>SERVLET:</th><td>default</td></tr>
druid-overlord-1 druid-overlord </table>
druid-overlord-1 druid-overlord 
druid-overlord-1 druid-overlord </body>
is the cached user-role mapping contains server/hostname information?
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Input does not start with Smile format header (first byte = 0x3c) and parser has REQUIRE_HEADER enabled: can not parse
at [Source: (byte[])
seems to indicate that the cached object is blank. I don’t understand why that will break Overlord.
g
I don't think it contains hostname-specific info
maybe the table that has the user maps is missing? or maybe some entries from that table are missing?
sadly i don't remember the name of the table