ZOOKEEPER-5011: Guard FileTxnSnapLog usage after close #2346

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seekskyworld wants to merge 1 commit into apache:branch-3.9 from seekskyworld:fix/5011-filetxnsnaplog-closed

+56 −1

seekskyworld commented Jan 14, 2026 •

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Issue: https://issues.apache.org/jira/browse/ZOOKEEPER-5011

Summary:

add a closed-state guard so stale references throw an IllegalStateException instead of NPEs
keep close idempotent and avoid marking the instance closed during truncateLog reopen
add coverage for save-after-close and idempotent close

Motivation:

improve diagnostics when stale ZooKeeperServer references hit FileTxnSnapLog after shutdown

Validation:

maven3\current\bin\mvn.cmd -pl zookeeper-server -Dtest=FileTxnSnapLogTest test


          fix: guard FileTxnSnapLog after close

c83704c

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