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https://issues.apache.org/jira/browse/KAFKA-6186?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Damian Guy resolved KAFKA-6186.
-------------------------------
Resolution: Duplicate
> RocksDB based WindowStore fail to create db file on Windows OS
> --------------------------------------------------------------
>
> Key: KAFKA-6186
> URL: https://issues.apache.org/jira/browse/KAFKA-6186
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 1.0.0
> Environment: Windows OS
> Reporter: James Wu
>
> Code snippet just like below
> ...
> textLines.flatMapValues(value ->
> Arrays.asList(pattern.split(value.toLowerCase()))).groupBy((key, word) ->
> word)
>
> .windowedBy(TimeWindows.of(10000)).count(Materialized.as("Counts"));
> ...
> Run it on Windows, then the exception is throw as below
> Caused by: org.rocksdb.RocksDBException: Failed to create dir:
> F:\tmp\kafka-streams\wordcount-lambda-example\1_0\Counts\Counts:1510099200000:
> Invalid argument
> at org.rocksdb.RocksDB.open(Native Method) ~[rocksdbjni-5.7.3.jar:na]
> at org.rocksdb.RocksDB.open(RocksDB.java:231) ~[rocksdbjni-5.7.3.jar:na]
> at
> org.apache.kafka.streams.state.internals.RocksDBStore.openDB(RocksDBStore.java:197)
> ~[kafka-streams-1.0.0.jar:na]
> ... 29 common frames omitted
> Checked the code, I found the issue is caused by line 72 in
> org.apache.kafka.streams.state.internals.Segments
> String segmentName(final long segmentId) {
> // previous format used - as a separator so if this changes in the
> future
> // then we should use something different.
> return name + ":" + segmentId * segmentInterval;
> }
> "segmentName" is passed to RocksDB, RockDB will use it as file name to create
> the DB file, as we known, the ":" cannot be part of file name in Windows OS.
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