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https://issues.apache.org/jira/browse/NIFI-8423?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Josef Zahner closed NIFI-8423.
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Found a custom processor which sets the java default time due to bad
programming. Removing the questioned line helped to solve the issue.
Code:
{code:java}
TimeZone.setDefault(TimeZone.getTimeZone("UTC")
{code}
> Timezone wrong in UI for an 8 node cluster
> ------------------------------------------
>
> Key: NIFI-8423
> URL: https://issues.apache.org/jira/browse/NIFI-8423
> Project: Apache NiFi
> Issue Type: Bug
> Components: Core UI
> Affects Versions: 1.13.2
> Environment: 8 Node NiFi Cluster on CentOS 7
> OpenJDK 1.8.0_282
> Local timezone: Europe/Zurich (CEST or UTC+2h)
> Reporter: Josef Zahner
> Priority: Critical
> Labels: centos, cluster, openjdk, timezone
> Attachments: Screenshot 2021-04-20 at 14.24.17.png, Screenshot
> 2021-04-20 at 14.34.36.png, Screenshot 2021-04-20 at 15.00.22.png,
> image-2021-04-13-15-14-02-162.png, image-2021-04-13-15-14-06-930.png,
> image-2021-04-13-15-14-56-690.png, manual_configured_timezone_gui_output.png,
> nifi-app_log.png
>
>
> We just upgraded to NiFi 1.13.2 and Java 1.8.0_282
> On our 8 node NiFi 1.13.2 cluster with timezone Europe/Zurich (CEST/CET), we
> have the issue that the UI does display the correct timezone (CEST, so UTC
> +2h), but in fact the time is displayed as UTC. NTP is enabled and working.
> The OS configuration/location is everywhere the same (doesn't matter if
> single or cluster NiFi). My tests below are all done at around 15:xx:xx local
> time (CEST).
> As you can see below, the timezone seems to be correct, but the time itself
> within NiFi is 2h behind (so in fact UTC) compared to Windows. In earlier
> NiFi/java versions it was enough to multiple times restart the cluster, but
> on the newest versions this doesn't help anymore. It shows most of the time
> CEST with the wrong time or directly UTC.
> !image-2021-04-13-15-14-06-930.png!
>
> The single NiFi instances or the 2 node clusters are always fine. The issue
> exists only on our 8 node cluster.
> NiFi Single Node Screenshot, which is fine (CEST, so UTC + 2h):
> !image-2021-04-13-15-14-02-162.png!
>
> If we set the -Duser.timezone to "Europe/Zurich" in bootstrap.conf, the UI
> shows no summer time, so only GMT+1 instead of GMT+2. As well not what we
> want.
> {code:java}
> java.arg.20=-Duser.timezone="Europe/Zurich"{code}
> !image-2021-04-13-15-14-56-690.png!
>
> What Matt below suggested has been verified, all servers (single nodes as
> well as clusters) are reporting the same time/timezone.
> [https://community.cloudera.com/t5/Support-Questions/NiFi-clock-is-off-by-one-hour-daylight-savings-problem/td-p/192942]
>
> So the question remains, where on a NiFi cluster comes the time from the UI
> and what could cause it that it is wrong? Sometimes I get UTC, sometimes I'm
> getting CEST but the time is anyhow UTC instead of CEST... I really need to
> have the correct time in the UI as I don't know what the impact could be on
> our dataflows.
>
> Any help would be really appreciated.
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