Github user hanm commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/615#discussion_r215129214
--- Diff: src/java/main/org/apache/zookeeper/server/util/LogChopper.java ---
@@ -0,0 +1,152 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.zookeeper.server.util;
+
+import org.apache.jute.BinaryInputArchive;
+import org.apache.jute.BinaryOutputArchive;
+import org.apache.jute.Record;
+import org.apache.zookeeper.server.persistence.FileHeader;
+import org.apache.zookeeper.server.persistence.FileTxnLog;
+import org.apache.zookeeper.txn.TxnHeader;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.EOFException;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.zip.Adler32;
+import java.util.zip.Checksum;
+
+/**
+ * this class will chop the log at the specified zxid
+ */
+public class LogChopper {
+ public static void main(String args[]) {
+ if (args.length != 3) {
+ System.out.println("Usage: LogChopper zxid_to_chop_to
txn_log_to_chop chopped_filename");
+ System.out.println(" this program will read the
txn_log_to_chop file and copy all the transactions");
+ System.out.println(" from it up to (and including) the
given zxid into chopped_filename.");
+ System.exit(1);
+ }
+ long zxid = Long.decode(args[0]);
+ String txnLog = args[1];
+ String choppedLog = args[2];
+
+ int rc = 2;
--- End diff --
We have recently added `ExitCode` enum, maybe use those for exit code?
---
