kerby-backend/zookeeper-backend/src/main/java/org/apache/kerby/kerberos/kdc/identitybackend/IdentityZNode.java [86:99]:
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        if (ZKUtil.checkExists(this.zk, znode) == -1) {
            throw new IllegalArgumentException("The znode " + znode + " is not found");
        }
        byte[] data = new byte[0];
        try {
            data = ZKUtil.getData(this.zk, znode);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        if (data != null) {
            return BytesUtil.bytes2int(data, true);
        } else {
            LOG.warn("can't get the date from znode: " + znode);
            return -1;
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kerby-backend/zookeeper-backend/src/main/java/org/apache/kerby/kerberos/kdc/identitybackend/IdentityZNode.java [111:124]:
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        if (ZKUtil.checkExists(this.zk, znode) == -1) {
            throw new IllegalArgumentException("The znode " + znode + " is not found");
        }
        byte[] data = new byte[0];
        try {
            data = ZKUtil.getData(this.zk, znode);
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
        }
        if (data != null) {
            return BytesUtil.bytes2int(data, true);
        } else {
            LOG.warn("can't get the date from znode: " + znode);
            return -1;
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