Repository: cassandra Updated Branches: refs/heads/trunk b2808b1dc -> 0c6050bca
add check of the system wall clock time at startup patch by jasobrown; reviewed by driftx for CASSANDRA-8305 Project: http://git-wip-us.apache.org/repos/asf/cassandra/repo Commit: http://git-wip-us.apache.org/repos/asf/cassandra/commit/1470cee5 Tree: http://git-wip-us.apache.org/repos/asf/cassandra/tree/1470cee5 Diff: http://git-wip-us.apache.org/repos/asf/cassandra/diff/1470cee5 Branch: refs/heads/trunk Commit: 1470cee58872b89ee8ae5d2f7e287ad7f32ed50b Parents: feb2675 Author: Jason Brown <[email protected]> Authored: Wed Nov 12 18:31:04 2014 -0800 Committer: Jason Brown <[email protected]> Committed: Thu Nov 13 18:23:46 2014 -0800 ---------------------------------------------------------------------- CHANGES.txt | 1 + .../apache/cassandra/service/CassandraDaemon.java | 16 ++++++++++++++++ 2 files changed, 17 insertions(+) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/cassandra/blob/1470cee5/CHANGES.txt ---------------------------------------------------------------------- diff --git a/CHANGES.txt b/CHANGES.txt index 6caa5c7..6517c6a 100644 --- a/CHANGES.txt +++ b/CHANGES.txt @@ -1,4 +1,5 @@ 2.1.3 + * add check of the system wall clock time at startup (CASSANDRA-8305) * Support for frozen collections (CASSANDRA-7859) * Fix overflow on histogram computation (CASSANDRA-8028) * Have paxos reuse the timestamp generation of normal queries (CASSANDRA-7801) http://git-wip-us.apache.org/repos/asf/cassandra/blob/1470cee5/src/java/org/apache/cassandra/service/CassandraDaemon.java ---------------------------------------------------------------------- diff --git a/src/java/org/apache/cassandra/service/CassandraDaemon.java b/src/java/org/apache/cassandra/service/CassandraDaemon.java index 38d0414..5897a22 100644 --- a/src/java/org/apache/cassandra/service/CassandraDaemon.java +++ b/src/java/org/apache/cassandra/service/CassandraDaemon.java @@ -24,6 +24,7 @@ import java.lang.management.MemoryPoolMXBean; import java.net.InetAddress; import java.net.UnknownHostException; import java.util.Arrays; +import java.util.Date; import java.util.Map; import java.util.UUID; import java.util.concurrent.TimeUnit; @@ -72,6 +73,13 @@ public class CassandraDaemon private static final CassandraDaemon instance = new CassandraDaemon(); + /** + * The earliest legit timestamp a casandra instance could have ever launched. + * Date roughly taken from http://perspectives.mvdirona.com/2008/07/12/FacebookReleasesCassandraAsOpenSource.aspx + * We use this to ensure the system clock is at least somewhat correct at startup. + */ + private static final long EARLIEST_LAUNCH_DATE = 1215820800000L; + public Server thriftServer; public Server nativeServer; @@ -92,6 +100,14 @@ public class CassandraDaemon { logger.info("Could not resolve local host"); } + + long now = System.currentTimeMillis(); + if (now < EARLIEST_LAUNCH_DATE) + { + logger.error("current machine time is {}, but that is seemingly incorrect. exiting now.", new Date(now)); + System.exit(3); + } + // log warnings for different kinds of sub-optimal JVMs. tldr use 64-bit Oracle >= 1.6u32 if (!DatabaseDescriptor.hasLargeAddressSpace()) logger.info("32bit JVM detected. It is recommended to run Cassandra on a 64bit JVM for better performance.");
