steFaiz opened a new pull request, #7797:
URL: https://github.com/apache/paimon/pull/7797
### Purpose
Currently stats evolution in Files System table do not consider data
evolution, which may cause:
```text
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds
for length 1
at
org.apache.paimon.memory.MemorySegmentUtils.getLongMultiSegments(MemorySegmentUtils.java:779)
~[paimon-flink-1.18-1.4-beta-20260415.042901-14.jar:1.4-beta-SNAPSHOT]
at
org.apache.paimon.memory.MemorySegmentUtils.getLong(MemorySegmentUtils.java:769)
~[paimon-flink-1.18-1.4-beta-20260415.042901-14.jar:1.4-beta-SNAPSHOT]
at org.apache.paimon.data.BinaryArray.getLong(BinaryArray.java:160)
~[paimon-flink-1.18-1.4-beta-20260415.042901-14.jar:1.4-beta-SNAPSHOT]
at
org.apache.paimon.stats.SimpleStatsEvolution$NullCountsEvoArray.getLong(SimpleStatsEvolution.java:215)
~[paimon-flink-1.18-1.4-beta-20260415.042901-14.jar:1.4-beta-SNAPSHOT]
...
```
This PR fixes this by passing the writeCols on creation.
### Tests
See `org.apache.paimon.table.system.FilesTableTest`
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