Github user keith-turner commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/120#discussion_r70669365
--- Diff:
server/base/src/main/java/org/apache/accumulo/server/log/WalStateManager.java
---
@@ -98,10 +102,16 @@ private String root() {
// Tablet server exists
public void initWalMarker(TServerInstance tsi) throws WalMarkerException
{
byte[] data = new byte[0];
- try {
- zoo.putPersistentData(root() + "/" + tsi.toString(), data,
NodeExistsPolicy.FAIL);
- } catch (KeeperException | InterruptedException e) {
- throw new WalMarkerException(e);
+ while (true) {
+ try {
+ zoo.putPersistentData(root() + "/" + tsi.toString(), data,
NodeExistsPolicy.FAIL);
+ break;
+ } catch (NoNodeException e) {
+ log.info("WAL parent node does not exist (upgrade may be in
progress) : " + e.getMessage());
--- End diff --
@ShawnWalker made a very nice suggestion irc. Create the WALs node
instead of waiting. This breaks this invisible dependency on code in the
master.
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