Fix collection concurrency #6052
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core/src/main/java/org/apache/accumulo/core/conf/ConfigurationCopy.java
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core/src/main/java/org/apache/accumulo/core/iteratorsImpl/system/StatsIterator.java
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server/base/src/main/java/org/apache/accumulo/server/compaction/FileCompactor.java
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server/manager/src/main/java/org/apache/accumulo/manager/Migrations.java
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...server/src/main/java/org/apache/accumulo/tserver/compactions/ExternalCompactionExecutor.java
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--------- Co-authored-by: Keith Turner <kturner@apache.org>
keith-turner
approved these changes
Jan 13, 2026
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Looked through the code for places that use
Collections.syncronized*. The docs for these collections reads:This PR fixes all the spots in the code that I found that where not iterating within a
synchronizedblock.This PR also simplifies TimeoutTracker creation with computeIfAbsent in batch reader/writer code.