[fix](iceberg) Backport external write hardening to branch-4.1 - #66825

[fix](iceberg) Backport external write hardening to branch-4.1#66825

Gabriel39 wants to merge 4 commits into

apache:branch-4.1apache/doris:branch-4.1from

Gabriel39:dev/forward-port-iceberg-paimon-fixes-branch-4.1Gabriel39/incubator-doris:dev/forward-port-iceberg-paimon-fixes-branch-4.1Copy head branch name to clipboard