hyracks/hyracks-storage-am-lsm-rtree/src/main/java/org/apache/hyracks/storage/am/lsm/rtree/impls/ExternalRTree.java [177:199]:
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    public void commitTransactionDiskComponent(ILSMComponent newComponent) throws HyracksDataException {

        // determine which list is the new one and flip the pointer
        List<ILSMComponent> newerList;
        List<ILSMComponent> olderList;
        if (version == 0) {
            newerList = diskComponents;
            olderList = secondDiskComponents;
            version = 1;
        } else {
            newerList = secondDiskComponents;
            olderList = diskComponents;
            version = 0;
        }
        // Remove components from list
        olderList.clear();
        // Add components
        olderList.addAll(newerList);
        if (newComponent != null) {
            // Add it to the list
            olderList.add(0, newComponent);
        }
    }
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hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTreeWithBuddy.java [510:532]:
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    public void commitTransactionDiskComponent(ILSMComponent newComponent) throws HyracksDataException {

        // determine which list is the new one and flip the pointer
        List<ILSMComponent> newerList;
        List<ILSMComponent> olderList;
        if (version == 0) {
            newerList = diskComponents;
            olderList = secondDiskComponents;
            version = 1;
        } else {
            newerList = secondDiskComponents;
            olderList = diskComponents;
            version = 0;
        }
        // Remove components from list
        olderList.clear();
        // Add components
        olderList.addAll(newerList);
        if (newComponent != null) {
            // Add it to the list
            olderList.add(0, newComponent);
        }
    }
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hyracks/hyracks-storage-am-lsm-btree/src/main/java/org/apache/hyracks/storage/am/lsm/btree/impls/ExternalBTree.java [231:252]:
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    public void commitTransactionDiskComponent(ILSMComponent newComponent) throws HyracksDataException {
        // determine which list is the new one and flip the pointer
        List<ILSMComponent> newerList;
        List<ILSMComponent> olderList;
        if (version == 0) {
            newerList = diskComponents;
            olderList = secondDiskComponents;
            version = 1;
        } else {
            newerList = secondDiskComponents;
            olderList = diskComponents;
            version = 0;
        }
        // Remove components from list
        olderList.clear();
        // Add components
        olderList.addAll(newerList);
        if (newComponent != null) {
            // Add it to the list
            olderList.add(0, newComponent);
        }
    }
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