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[HUDI-2537] Fix metadata table for flink - #3774
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a85e90aComparedanny0405
commented
Oct 9, 2021
@hudi-bot run azure |
| // Trigger compaction with suffixes based on the same instant time. This ensures that any future | ||
| // delta commits synced over will not have an instant time lesser than the last completed instant on the | ||
| // metadata table. | ||
| final String compactionInstantTime = latestDeltacommitTime + "001"; |
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Hi @danny0405
I encountered a DateTimeParseException in this method today. This is the error stack when I run a test case TestMetadataTableWithSparkDataSource.testReadability with metrics function enabled.
java.time.format.DateTimeParseException: Text '00000000000000001' could not be parsed: Invalid value for YearOfEra (valid values 1 - 999999999/1000000000): 0
at java.time.format.DateTimeFormatter.createError(DateTimeFormatter.java:1920)
at java.time.format.DateTimeFormatter.parse(DateTimeFormatter.java:1855)
at java.time.LocalDateTime.parse(LocalDateTime.java:492)
at org.apache.hudi.common.table.timeline.HoodieInstantTimeGenerator.parseDateFromInstantTime(HoodieInstantTimeGenerator.java:102)
at org.apache.hudi.common.table.timeline.HoodieActiveTimeline.parseDateFromInstantTime(HoodieActiveTimeline.java:84)
at org.apache.hudi.client.SparkRDDWriteClient.completeCompaction(SparkRDDWriteClient.java:322)
at org.apache.hudi.client.SparkRDDWriteClient.completeTableService(SparkRDDWriteClient.java:461)
at org.apache.hudi.client.SparkRDDWriteClient.compact(SparkRDDWriteClient.java:346)
...
The exception shows there is an illegal date text, so I checked code, found out the illegal date coming from here, where latestDeltacommitTime is "00000000000000", then compactionInstantTime is "00000000000000001", which is an illegal date for HoodieInstantTimeGenerator.parseDateFromInstantTime.
As I understand, the value "00000000000000" in latestDeltacommitTime comes from the metadata table timeline, which is an init timestamp in metadata table.
May I ask if it is a good solution that I disable Hudi metrics in metadataWriteConfig by default? Do you have a better idea?
There is a similar issue I found before in PR: #6000
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I'm afraid this is a bug, can you fire a fix here ? Say, disable/skip the metrics sending when we the instant time starts with 00000000000000.
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OK, got it, let me fix it here
what do you think if I replace the timestamp as HoodieTimeline.METADATA_BOOTSTRAP_INSTANT_TS (the value is "00000000000001") if latestDeltacommitTime.equals("00000000000000")? As in PR #6000, HoodieTimeline.METADATA_BOOTSTRAP_INSTANT_TS has been handled correctly.
e.g.
if (latestDeltacommitTime.equals(HoodieTimeline.INIT_INSTANT_TS)) {
compactionInstantTime = HoodieTimeline.METADATA_BOOTSTRAP_INSTANT_TS;
} else {
compactionInstantTime = latestDeltacommitTime + "001";
}
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