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Posted to dev@zookeeper.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2018/01/12 06:15:00 UTC
[jira] [Commented] (ZOOKEEPER-2901) Session ID that is negative
causes mis-calculation of Ephemeral Type
[ https://issues.apache.org/jira/browse/ZOOKEEPER-2901?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16323604#comment-16323604 ]
ASF GitHub Bot commented on ZOOKEEPER-2901:
-------------------------------------------
Github user lvfangmin commented on a diff in the pull request:
https://github.com/apache/zookeeper/pull/377#discussion_r161147063
--- Diff: src/java/main/org/apache/zookeeper/server/EphemeralType.java ---
@@ -40,19 +39,40 @@
TTL;
public static final long CONTAINER_EPHEMERAL_OWNER = Long.MIN_VALUE;
- public static final long MAX_TTL = 0x0fffffffffffffffL;
- public static final long TTL_MASK = 0x8000000000000000L;
+ public static final long MAX_TTL = 0x00ffffffffffffffL;
+ public static final long TTL_MASK = 0xff00000000000000L;
+ public static final long MAX_TTL_SERVER_ID = 0xfe; // 254
+
+ public static final String EXTENDED_TYPES_ENABLED_PROPERTY = "zookeeper.extendedTypesEnabled";
+
+ public static boolean extendedEphemeralTypesEnabled() {
+ return Boolean.getBoolean(EXTENDED_TYPES_ENABLED_PROPERTY);
+ }
public static EphemeralType get(long ephemeralOwner) {
+ if ( extendedEphemeralTypesEnabled() ) {
+ if ((ephemeralOwner & TTL_MASK) == TTL_MASK) {
+ return TTL;
+ }
+ }
if (ephemeralOwner == CONTAINER_EPHEMERAL_OWNER) {
return CONTAINER;
}
- if (ephemeralOwner < 0) {
- return TTL;
- }
return (ephemeralOwner == 0) ? VOID : NORMAL;
}
+ public static void validateServerId(long serverId) {
--- End diff --
Maybe we should not start the server if the server id is conflict with TTL feature, we can do this in QuorumPeerConfig.checkValidity.
> Session ID that is negative causes mis-calculation of Ephemeral Type
> --------------------------------------------------------------------
>
> Key: ZOOKEEPER-2901
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2901
> Project: ZooKeeper
> Issue Type: Bug
> Components: server
> Affects Versions: 3.5.3
> Environment: Running 3.5.3-beta in Docker container
> Reporter: Mark Johnson
> Assignee: Jordan Zimmerman
> Priority: Blocker
>
> In the code that determines the EphemeralType it is looking at the owner (which is the client ID or connection ID):
> EphemeralType.java:
> public static EphemeralType get(long ephemeralOwner) {
> if (ephemeralOwner == CONTAINER_EPHEMERAL_OWNER) {
> return CONTAINER;
> }
> if (ephemeralOwner < 0) {
> return TTL;
> }
> return (ephemeralOwner == 0) ? VOID : NORMAL;
> }
> However my connection ID is:
> header.getClientId(): -720548323429908480
> This causes the code to think this is a TTL Ephemeral node instead of a
> NORMAL Ephemeral node.
> This also explains why this is random - if my client ID is non-negative
> then the node gets added correctly.
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