Instant Time parsing error (Unable to obtain Instant from TemporalAccessor)
java, java-time
Solution
For others having this problem, it was pointed out that the origin of this bug lies in the outdated java version on mac.
To upgrade this version, I installed the latest JDK from: http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html. However after installing this, the old folder doesn't get updated and requires a manual update.
To do this, navigate to: `/Library/Java/JavaVirtualMachines/` where you will see 2 different directories containing jdk 1.8.0, a directory named `jdk1.8.0.jdk` and one named `jdk1.8.0_<version>.jdk` where version is the release number (for example 111).
Now go ahead and remove the directory called `jdk1.8.0.jdk` (or move it to a _old folder) and create a symlink pointing towards the new one with `sudo ln -s jdk1.8.0_<version>.jdk jdk1.8.0.jdk`
This solved the complete problem for me and now the error is not appearing anymore. A big thanks to @assylias and @basil-bourque for the suggestion that lead to this solution.
Problem
After running my program, I get this weird crash occurring after around 2 hours of running it stating that it can't parse the date. ``` Text '2016-10-26T12:31:39.084726218Z' could not be parsed: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477485099, NanoOfSecond=84726218},ISO of type java.time.format.Parsed at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1919) ``` Does anyone knows why it gives this? Since when looking online, I found that it could be due to an incorrect format, but since I did not specify the format this is not the case for me. The code that parses my timestamp is the following: ``` Instant instant = Instant.parse(cAdvisor.getTimestamp()); Long epoch = instant.getEpochSecond(); ``` Note: The `cAdvisor.getTimestamp()` method returns a string such as: `'2016-10-26T12:31:39.084726218Z'` Note 2: My java version reports this ``` java version "1.8.0-ea" Java(TM) SE Runtime Environment (build 1.8.0-ea-b115) Java HotSpot(TM) 64-Bit Server VM (build 25.0-b57, mixed mode) ``` Update #1: The following code replicates this issue: ``` import java.time.Instant; import java.util.Random; // one class needs to have a main() method public class Test { // arguments are passed using the text field below this editor public static void main(String[] args) { Random rand = new Random(); for (int i = 0; i < 100000; i++) { String date = "2016-10-26T12:31:39.0847"; for (int j = 0; j < rand.nextInt(6); j++) { date += rand.nextInt(10); } date += "Z"; date = date.replace("26", "" + (rand.nextInt(20) + 10)); Instant instant = Instant.parse(date); Long epoch = instant.getEpochSecond(); System.out.println(epoch); } } } ``` Which generates following stacktrace ``` Exception in thread "main" java.time.format.DateTimeParseException: Text '2016-10-27T12:31:39.0847Z' could not be parsed: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477571499, NanoOfSecond=84700000},ISO of type java.time.format.Parsed at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1919) at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1854) at java.time.Instant.parse(Instant.java:392) at Test.main(Test.java:23) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:483) at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147) Caused by: java.time.DateTimeException: Unable to obtain Instant from TemporalAccessor: {InstantSeconds=1477571499, NanoOfSecond=84700000},ISO of type java.time.format.Parsed at java.time.Instant.from(Instant.java:375) at java.time.Instant$$Lambda$7/1018081122.queryFrom(Unknown Source) at java.time.format.Parsed.query(Parsed.java:226) at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1850) ... 7 more ```