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From Andrey Davydov <andrey.davy...@gmail.com>
Subject RE: Exception during exception handling
Date Wed, 25 Sep 2019 21:05:59 GMT
There are two root causes. 

The first one is deserialization of binary object for “toString” when it is impossible
to deserialize (like IGNITE-12178). I saw stackowerflow discussion about fails on debug logging
while googling current problem.

The second, but it may be more important, it is unsafe exception handling, information about
origin error that cause transaction fail should not be lost anyway. It seems “try finaly”
block should be implemented inside “catch” section. Because we have chance to get exception
during exception handling anyway.

Andrey.

От: Denis Magda
Отправлено: 25 сентября 2019 г. в 22:36
Кому: user@ignite.apache.org; Ilya Kasnacheev
Тема: Re: Exception during exception handling

Hello Andrey and thanks for reporting!

This reminds me of this issue that has a similar stack trace:
https://issues.apache.org/jira/browse/IGNITE-12178

Ilya, looks like the root cause is absolutely the same, doesn't it?


-
Denis


On Wed, Sep 25, 2019 at 10:02 AM Andrey Davydov <andrey.davydov@gmail.com> wrote:
In ignite 2.7.5 I got following exception:
 
org.apache.ignite.IgniteException: Failed to create string representation of binary object.
             at org.apache.ignite.internal.util.tostring.GridToStringBuilder.toStringImpl(GridToStringBuilder.java:1022)
~[ignite-core-2.7.5.jar:2.7.5]
             at org.apache.ignite.internal.util.tostring.GridToStringBuilder.toString(GridToStringBuilder.java:762)
~[ignite-core-2.7.5.jar:2.7.5]
             at org.apache.ignite.internal.util.tostring.GridToStringBuilder.toString(GridToStringBuilder.java:710)
~[ignite-core-2.7.5.jar:2.7.5]
             at org.apache.ignite.internal.processors.cache.transactions.IgniteTxLocalAdapter.toString(IgniteTxLocalAdapter.java:1645)
~[ignite-core-2.7.5.jar:2.7.5]
             at org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtTxLocalAdapter.toString(GridDhtTxLocalAdapter.java:944)
~[ignite-core-2.7.5.jar:2.7.5]
             at org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtTxLocal.toString(GridDhtTxLocal.java:650)
~[ignite-core-2.7.5.jar:2.7.5]
             at java.lang.String.valueOf(String.java:2994) ~[?:1.8.0_222]
             at java.lang.StringBuilder.append(StringBuilder.java:131) ~[?:1.8.0_222]
             at org.apache.ignite.internal.processors.cache.transactions.IgniteTxLocalAdapter.userCommit(IgniteTxLocalAdapter.java:942)
~[ignite-core-2.7.5.jar:2.7.5]
             at org.apache.ignite.internal.processors.cache.distributed.dht.GridDhtTxLocalAdapter.localFinish(GridDhtTxLocalAdapter.java:796)
~[ignite-core-2.7.5.jar:2.7.5]….
 
As I found in sources, it was error during handling of other error. So this error masks real
problem. 
See org.apache.ignite.internal.processors.cache.transactions.IgniteTxLocalAdapter lines 934-944:
 
                    catch (Throwable ex) {
                        // We are about to initiate transaction rollback
when tx has started to committing.
                        // Need to remove version from committed list.
                        cctx.tm().removeCommittedTx(this);
 
                        boolean isNodeStopping = X.hasCause(ex, NodeStoppingException.class);
                        boolean hasInvalidEnvironmentIssue = X.hasCause(ex,
InvalidEnvironmentException.class);
 
                        IgniteCheckedException err0 = new IgniteTxHeuristicCheckedException("Failed
to locally write to cache " +
                            "(all transaction entries will be invalidated,
however there was a window when " +
                            "entries for this transaction were
visible to others): " + this, ex);
 
Exception occurs during IgniteTxHeuristicCheckedException creation. So we got unhandled error
and server halt instead of IgniteTxHeuristicCheckedException and rollback logic.
 
And the main issue: we lost any information about origin problem.
 
Andrey.
 

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